diff options
| author | Steve Piercy <web@stevepiercy.com> | 2016-04-16 14:13:20 -0700 |
|---|---|---|
| committer | Steve Piercy <web@stevepiercy.com> | 2016-04-16 14:13:20 -0700 |
| commit | fa4a340443b540ce2e0f10f53b104ac006f8e60e (patch) | |
| tree | 4e55ecc6133ad1f4508839931be2fc0f8773005b /docs | |
| parent | 88eebf18615d7b301bc443b6da031768bba9a831 (diff) | |
| parent | 401c6513dc53b783b1d2ab7c88dd56e8b8bb188b (diff) | |
| download | pyramid-fa4a340443b540ce2e0f10f53b104ac006f8e60e.tar.gz pyramid-fa4a340443b540ce2e0f10f53b104ac006f8e60e.tar.bz2 pyramid-fa4a340443b540ce2e0f10f53b104ac006f8e60e.zip | |
Merge remote-tracking branch 'upstream/master'
Diffstat (limited to 'docs')
33 files changed, 1083 insertions, 1013 deletions
diff --git a/docs/api/exceptions.rst b/docs/api/exceptions.rst index faca0fbb6..cb411458d 100644 --- a/docs/api/exceptions.rst +++ b/docs/api/exceptions.rst @@ -5,6 +5,8 @@ .. automodule:: pyramid.exceptions + .. autoexception:: BadCSRFOrigin + .. autoexception:: BadCSRFToken .. autoexception:: PredicateMismatch diff --git a/docs/api/session.rst b/docs/api/session.rst index 474e2bb32..56c4f52d7 100644 --- a/docs/api/session.rst +++ b/docs/api/session.rst @@ -9,6 +9,8 @@ .. autofunction:: signed_deserialize + .. autofunction:: check_csrf_origin + .. autofunction:: check_csrf_token .. autofunction:: SignedCookieSessionFactory diff --git a/docs/conf.py b/docs/conf.py index 1600e1f5c..c40f1c875 100644 --- a/docs/conf.py +++ b/docs/conf.py @@ -67,6 +67,7 @@ intersphinx_mapping = { 'jinja2': ('http://docs.pylonsproject.org/projects/pyramid-jinja2/en/latest/', None), 'pylonswebframework': ('http://docs.pylonsproject.org/projects/pylons-webframework/en/latest/', None), 'python': ('https://docs.python.org/3', None), + 'pytest': ('http://pytest.org/latest/', None), 'sqla': ('http://docs.sqlalchemy.org/en/latest', None), 'tm': ('http://docs.pylonsproject.org/projects/pyramid-tm/en/latest/', None), 'toolbar': ('http://docs.pylonsproject.org/projects/pyramid-debugtoolbar/en/latest', None), diff --git a/docs/glossary.rst b/docs/glossary.rst index 486e94848..1d97bffe8 100644 --- a/docs/glossary.rst +++ b/docs/glossary.rst @@ -1108,14 +1108,15 @@ Glossary ``f``, ``false``, ``n``, ``no``, ``off`` and ``0``. pip - The `Python Packaging Authority's <https://www.pypa.io/>`_ recommended - tool for installing Python packages. + The :term:`Python Packaging Authority`'s recommended tool for installing + Python packages. pyvenv - The Python Packaging Authority formerly recommended using this command - for `creating virtual environments on Python 3.4 and 3.5 + The :term:`Python Packaging Authority` formerly recommended using the + ``pyvenv`` command for `creating virtual environments on Python 3.4 and + 3.5 <https://packaging.python.org/en/latest/installing/#creating-virtual-environments>`_, - but it is deprecated in 3.6 in favor of ``python3 -m venv`` on UNIX or + but it was deprecated in 3.6 in favor of ``python3 -m venv`` on UNIX or ``python -m venv`` on Windows, which is backward compatible on Python 3.3 and greater. @@ -1124,9 +1125,14 @@ Glossary use by a particular application, rather than being installed system wide. venv - The `Python Packaging Authority's <https://www.pypa.io/>`_ recommended - tool for creating virtual environments on Python 3.3 and greater. + The :term:`Python Packaging Authority`'s recommended tool for creating + virtual environments on Python 3.3 and greater. Note: whenever you encounter commands prefixed with ``$VENV`` (Unix) or ``%VENV`` (Windows), know that that is the environment variable whose value is the root of the virtual environment in question. + + Python Packaging Authority + The `Python Packaging Authority (PyPA) <https://www.pypa.io/en/latest/>`_ + is a working group that maintains many of the relevant projects in Python + packaging.
\ No newline at end of file diff --git a/docs/narr/sessions.rst b/docs/narr/sessions.rst index d66e86258..7cf96ac7d 100644 --- a/docs/narr/sessions.rst +++ b/docs/narr/sessions.rst @@ -391,8 +391,8 @@ will return ``True``, otherwise it will raise ``HTTPBadRequest``. Optionally, you can specify ``raises=False`` to have the check return ``False`` instead of raising an exception. -By default, it checks for a GET or POST parameter named ``csrf_token`` or a -header named ``X-CSRF-Token``. +By default, it checks for a POST parameter named ``csrf_token`` or a header +named ``X-CSRF-Token``. .. code-block:: python @@ -411,15 +411,16 @@ Checking CSRF Tokens Automatically .. versionadded:: 1.7 -:app:`Pyramid` supports automatically checking CSRF tokens on POST requests. -Any other request may be checked manually. This feature can be turned on -globally for an application using the ``pyramid.require_default_csrf`` setting. +:app:`Pyramid` supports automatically checking CSRF tokens on requests with an +unsafe method as defined by RFC2616. Any other request may be checked manually. +This feature can be turned on globally for an application using the +``pyramid.require_default_csrf`` setting. If the ``pyramid.required_default_csrf`` setting is a :term:`truthy string` or ``True`` then the default CSRF token parameter will be ``csrf_token``. If a different token is desired, it may be passed as the value. Finally, a :term:`falsey string` or ``False`` will turn off automatic CSRF checking -globally on every POST request. +globally on every request. No matter what, CSRF checking may be explicitly enabled or disabled on a per-view basis using the ``require_csrf`` view option. This option is of the @@ -430,13 +431,20 @@ If ``require_csrf`` is ``True`` but does not explicitly define a token to check, then the token name is pulled from whatever was set in the ``pyramid.require_default_csrf`` setting. Finally, if that setting does not explicitly define a token, then ``csrf_token`` is the token required. This token -name will be required in ``request.params`` which is a combination of the -query string and a submitted form body. +name will be required in ``request.POST`` which is the submitted form body. It is always possible to pass the token in the ``X-CSRF-Token`` header as well. There is currently no way to define an alternate name for this header without performing CSRF checking manually. +In addition to token based CSRF checks, the automatic CSRF checking will also +check the referrer of the request to ensure that it matches one of the trusted +origins. By default the only trusted origin is the current host, however +additional origins may be configured by setting +``pyramid.csrf_trusted_origins`` to a list of domain names (and ports if they +are non standard). If a host in the list of domains starts with a ``.`` then +that will allow all subdomains as well as the domain without the ``.``. + If CSRF checks fail then a :class:`pyramid.exceptions.BadCSRFToken` exception will be raised. This exception may be caught and handled by an :term:`exception view` but, by default, will result in a ``400 Bad Request`` diff --git a/docs/narr/viewconfig.rst b/docs/narr/viewconfig.rst index e645185f5..cd5b8feb0 100644 --- a/docs/narr/viewconfig.rst +++ b/docs/narr/viewconfig.rst @@ -195,10 +195,11 @@ Non-Predicate Arguments ``require_csrf`` - CSRF checks only affect POST requests. Any other request methods will pass - untouched. This option is used in combination with the - ``pyramid.require_default_csrf`` setting to control which request parameters - are checked for CSRF tokens. + CSRF checks will affect any request method that is not defined as a "safe" + method by RFC2616. In pratice this means that GET, HEAD, OPTIONS, and TRACE + methods will pass untouched and all others methods will require CSRF. This + option is used in combination with the ``pyramid.require_default_csrf`` + setting to control which request parameters are checked for CSRF tokens. This feature requires a configured :term:`session factory`. @@ -214,6 +215,9 @@ Non-Predicate Arguments If this option is set to ``False`` then CSRF checks will be disabled regardless of the ``pyramid.require_default_csrf`` setting. + In addition, if this option is set to ``True`` or a string then CSRF origin + checking will be enabled. + See :ref:`auto_csrf_checking` for more information. .. versionadded:: 1.7 @@ -459,7 +463,7 @@ configured view. check name. If CSRF checking is performed, the checked value will be the value of - ``request.params[check_name]``. This value will be compared against the + ``request.POST[check_name]``. This value will be compared against the value of ``request.session.get_csrf_token()``, and the check will pass if these two values are the same. If the check passes, the associated view will be permitted to execute. If the check fails, the associated view will not be diff --git a/docs/quick_tutorial/authentication.rst b/docs/quick_tutorial/authentication.rst index cb3839b08..acff97f3b 100644 --- a/docs/quick_tutorial/authentication.rst +++ b/docs/quick_tutorial/authentication.rst @@ -4,28 +4,27 @@ 20: Logins With Authentication ============================== -Login views that authenticate a username/password against a list of -users. +Login views that authenticate a username and password against a list of users. + Background ========== -Most web applications have URLs that allow people to add/edit/delete -content via a web browser. Time to add -:ref:`security <security_chapter>` -to the application. In this first step we introduce authentication. -That is, logging in and logging out using Pyramid's rich facilities for -pluggable user storages. +Most web applications have URLs that allow people to add/edit/delete content +via a web browser. Time to add :ref:`security <security_chapter>` to the +application. In this first step we introduce authentication. That is, logging +in and logging out, using Pyramid's rich facilities for pluggable user storage. + +In the next step we will introduce protection of resources with authorization +security statements. -In the next step we will introduce protection resources with -authorization security statements. Objectives ========== -- Introduce the Pyramid concepts of authentication +- Introduce the Pyramid concepts of authentication. -- Create login/logout views +- Create login and logout views. Steps ===== @@ -38,22 +37,20 @@ Steps $ $VENV/bin/pip install -e . #. Put the security hash in the ``authentication/development.ini`` - configuration file as ``tutorial.secret`` instead of putting it in - the code: + configuration file as ``tutorial.secret`` instead of putting it in the code: .. literalinclude:: authentication/development.ini :language: ini :linenos: -#. Get authentication (and for now, authorization policies) and login - route into the :term:`configurator` in - ``authentication/tutorial/__init__.py``: +#. Get authentication (and for now, authorization policies) and login route + into the :term:`configurator` in ``authentication/tutorial/__init__.py``: .. literalinclude:: authentication/tutorial/__init__.py :linenos: -#. Create a ``authentication/tutorial/security.py`` module that can find - our user information by providing an *authentication policy callback*: +#. Create an ``authentication/tutorial/security.py`` module that can find our + user information by providing an *authentication policy callback*: .. literalinclude:: authentication/tutorial/security.py :linenos: @@ -69,7 +66,7 @@ Steps :language: html :linenos: -#. Provide a login/logout box in ``authentication/tutorial/home.pt`` +#. Provide a login/logout box in ``authentication/tutorial/home.pt``: .. literalinclude:: authentication/tutorial/home.pt :language: html @@ -95,39 +92,37 @@ Steps Analysis ======== -Unlike many web frameworks, Pyramid includes a built-in but optional -security model for authentication and authorization. This security -system is intended to be flexible and support many needs. In this -security model, authentication (who are you) and authorization (what -are you allowed to do) are not just pluggable, but de-coupled. To learn -one step at a time, we provide a system that identifies users and lets -them log out. - -In this example we chose to use the bundled -:ref:`AuthTktAuthenticationPolicy <authentication_module>` -policy. We enabled it in our configuration and provided a -ticket-signing secret in our INI file. - -Our view class grew a login view. When you reached it via a GET, -it returned a login form. When reached via POST, it processed the -username and password against the "groupfinder" callable that we -registered in the configuration. - -In our template, we fetched the ``logged_in`` value from the view -class. We use this to calculate the logged-in user, -if any. In the template we can then choose to show a login link to -anonymous visitors or a logout link to logged-in users. - -Extra Credit +Unlike many web frameworks, Pyramid includes a built-in but optional security +model for authentication and authorization. This security system is intended to +be flexible and support many needs. In this security model, authentication (who +are you) and authorization (what are you allowed to do) are not just pluggable, +but de-coupled. To learn one step at a time, we provide a system that +identifies users and lets them log out. + +In this example we chose to use the bundled :ref:`AuthTktAuthenticationPolicy +<authentication_module>` policy. We enabled it in our configuration and +provided a ticket-signing secret in our INI file. + +Our view class grew a login view. When you reached it via a ``GET`` request, it +returned a login form. When reached via ``POST``, it processed the submitted +username and password against the "groupfinder" callable that we registered in +the configuration. + +In our template, we fetched the ``logged_in`` value from the view class. We use +this to calculate the logged-in user, if any. In the template we can then +choose to show a login link to anonymous visitors or a logout link to logged-in +users. + + +Extra credit ============ #. What is the difference between a user and a principal? #. Can I use a database behind my ``groupfinder`` to look up principals? -#. Once I am logged in, does any user-centric information get jammed - onto each request? Use ``import pdb; pdb.set_trace()`` to answer - this. +#. Once I am logged in, does any user-centric information get jammed onto each + request? Use ``import pdb; pdb.set_trace()`` to answer this. .. seealso:: See also :ref:`security_chapter`, :ref:`AuthTktAuthenticationPolicy <authentication_module>`. diff --git a/docs/quick_tutorial/authorization.rst b/docs/quick_tutorial/authorization.rst index a4a12774b..58c1d2582 100644 --- a/docs/quick_tutorial/authorization.rst +++ b/docs/quick_tutorial/authorization.rst @@ -4,33 +4,35 @@ 21: Protecting Resources With Authorization =========================================== -Assign security statements to resources describing the permissions -required to perform an operation. +Assign security statements to resources describing the permissions required to +perform an operation. + Background ========== -Our application has URLs that allow people to add/edit/delete content -via a web browser. Time to add security to the application. Let's -protect our add/edit views to require a login (username of -``editor`` and password of ``editor``). We will allow the other views -to continue working without a password. +Our application has URLs that allow people to add/edit/delete content via a web +browser. Time to add security to the application. Let's protect our add/edit +views to require a login (username of ``editor`` and password of ``editor``). +We will allow the other views to continue working without a password. + Objectives ========== -- Introduce the Pyramid concepts of authentication, authorization, - permissions, and access control lists (ACLs) +- Introduce the Pyramid concepts of authentication, authorization, permissions, + and access control lists (ACLs). + +- Make a :term:`root factory` that returns an instance of our class for the top + of the application. -- Make a :term:`root factory` that returns an instance of our - class for the top of the application +- Assign security statements to our root resource. -- Assign security statements to our root resource +- Add a permissions predicate on a view. -- Add a permissions predicate on a view +- Provide a :term:`Forbidden view` to handle visiting a URL without adequate + permissions. -- Provide a :term:`Forbidden view` to handle visiting a URL without - adequate permissions Steps ===== @@ -42,14 +44,13 @@ Steps $ cd ..; cp -r authentication authorization; cd authorization $ $VENV/bin/pip install -e . -#. Start by changing ``authorization/tutorial/__init__.py`` to - specify a root factory to the :term:`configurator`: +#. Start by changing ``authorization/tutorial/__init__.py`` to specify a root + factory to the :term:`configurator`: .. literalinclude:: authorization/tutorial/__init__.py :linenos: -#. That means we need to implement - ``authorization/tutorial/resources.py`` +#. That means we need to implement ``authorization/tutorial/resources.py``: .. literalinclude:: authorization/tutorial/resources.py :linenos: @@ -70,48 +71,47 @@ Steps #. If you are still logged in, click the "Log Out" link. -#. Visit http://localhost:6543/howdy in a browser. You should be - asked to login. +#. Visit http://localhost:6543/howdy in a browser. You should be asked to + login. + Analysis ======== This simple tutorial step can be boiled down to the following: -- A view can require a *permission* (``edit``) +- A view can require a *permission* (``edit``). -- The context for our view (the ``Root``) has an access control list - (ACL) +- The context for our view (the ``Root``) has an access control list (ACL). -- This ACL says that the ``edit`` permission is available on ``Root`` - to the ``group:editors`` *principal* +- This ACL says that the ``edit`` permission is available on ``Root`` to the + ``group:editors`` *principal*. -- The registered ``groupfinder`` answers whether a particular user - (``editor``) has a particular group (``group:editors``) +- The registered ``groupfinder`` answers whether a particular user (``editor``) + has a particular group (``group:editors``). -In summary: ``hello`` wants ``edit`` permission, ``Root`` says +In summary, ``hello`` wants ``edit`` permission, ``Root`` says ``group:editors`` has ``edit`` permission. -Of course, this only applies on ``Root``. Some other part of the site -(a.k.a. *context*) might have a different ACL. +Of course, this only applies on ``Root``. Some other part of the site (a.k.a. +*context*) might have a different ACL. + +If you are not logged in and visit ``/howdy``, you need to get shown the login +screen. How does Pyramid know what is the login page to use? We explicitly told +Pyramid that the ``login`` view should be used by decorating the view with +``@forbidden_view_config``. -If you are not logged in and visit ``/howdy``, you need to get -shown the login screen. How does Pyramid know what is the login page to -use? We explicitly told Pyramid that the ``login`` view should be used -by decorating the view with ``@forbidden_view_config``. -Extra Credit +Extra credit ============ -#. Do I have to put a ``renderer`` in my ``@forbidden_view_config`` - decorator? +#. Do I have to put a ``renderer`` in my ``@forbidden_view_config`` decorator? #. Perhaps you would like the experience of not having enough permissions (forbidden) to be richer. How could you change this? -#. Perhaps we want to store security statements in a database and - allow editing via a browser. How might this be done? +#. Perhaps we want to store security statements in a database and allow editing + via a browser. How might this be done? -#. What if we want different security statements on different kinds of - objects? Or on the same kinds of objects, but in different parts of a - URL hierarchy? +#. What if we want different security statements on different kinds of objects? + Or on the same kinds of objects, but in different parts of a URL hierarchy? diff --git a/docs/quick_tutorial/databases.rst b/docs/quick_tutorial/databases.rst index f9f548585..c8d87c180 100644 --- a/docs/quick_tutorial/databases.rst +++ b/docs/quick_tutorial/databases.rst @@ -4,37 +4,39 @@ 19: Databases Using SQLAlchemy ============================== -Store/retrieve data using the SQLAlchemy ORM atop the SQLite database. +Store and retrieve data using the SQLAlchemy ORM atop the SQLite database. + Background ========== -Our Pyramid-based wiki application now needs database-backed storage of -pages. This frequently means a SQL database. The Pyramid community -strongly supports the -:ref:`SQLAlchemy <sqla:index_toplevel>` project and its -:ref:`object-relational mapper (ORM) <sqla:ormtutorial_toplevel>` -as a convenient, Pythonic way to interface to databases. +Our Pyramid-based wiki application now needs database-backed storage of pages. +This frequently means an SQL database. The Pyramid community strongly supports +the :ref:`SQLAlchemy <sqla:index_toplevel>` project and its +:ref:`object-relational mapper (ORM) <sqla:ormtutorial_toplevel>` as a +convenient, Pythonic way to interface to databases. -In this step we hook up SQLAlchemy to a SQLite database table, -providing storage and retrieval for the wikipages in the previous step. +In this step we hook up SQLAlchemy to a SQLite database table, providing +storage and retrieval for the wiki pages in the previous step. .. note:: - The ``alchemy`` scaffold is really helpful for getting a - SQLAlchemy project going, including generation of the console - script. Since we want to see all the decisions, we will forgo - convenience in this tutorial and wire it up ourselves. + The ``alchemy`` scaffold is really helpful for getting an SQLAlchemy + project going, including generation of the console script. Since we want to + see all the decisions, we will forgo convenience in this tutorial, and wire + it up ourselves. + Objectives ========== -- Store pages in SQLite by using SQLAlchemy models +- Store pages in SQLite by using SQLAlchemy models. -- Use SQLAlchemy queries to list/add/view/edit pages +- Use SQLAlchemy queries to list/add/view/edit pages. + +- Provide a database-initialize command by writing a Pyramid *console script* + which can be run from the command line. -- Provide a database-initialize command by writing a Pyramid *console - script* which can be run from the command line Steps ===== @@ -45,31 +47,31 @@ Steps $ cd ..; cp -r forms databases; cd databases -#. We need to add some dependencies in ``databases/setup.py`` as well - as an "entry point" for the command-line script: +#. We need to add some dependencies in ``databases/setup.py`` as well as an + "entry point" for the command-line script: .. literalinclude:: databases/setup.py :linenos: .. note:: - We aren't yet doing ``$VENV/bin/pip install -e .`` as we - will change it later. + We aren't yet doing ``$VENV/bin/pip install -e .`` as we will change it + later. -#. Our configuration file at ``databases/development.ini`` wires - together some new pieces: +#. Our configuration file at ``databases/development.ini`` wires together some + new pieces: .. literalinclude:: databases/development.ini :language: ini -#. This engine configuration now needs to be read into the application - through changes in ``databases/tutorial/__init__.py``: +#. This engine configuration now needs to be read into the application through + changes in ``databases/tutorial/__init__.py``: .. literalinclude:: databases/tutorial/__init__.py :linenos: -#. Make a command-line script at ``databases/tutorial/initialize_db.py`` - to initialize the database: +#. Make a command-line script at ``databases/tutorial/initialize_db.py`` to + initialize the database: .. literalinclude:: databases/tutorial/initialize_db.py :linenos: @@ -90,51 +92,49 @@ Steps .. code-block:: bash $ $VENV/bin/initialize_tutorial_db development.ini - 2015-06-01 11:22:52,650 INFO [sqlalchemy.engine.base.Engine][MainThread] SELECT CAST('test plain returns' AS VARCHAR(60)) AS anon_1 - 2015-06-01 11:22:52,650 INFO [sqlalchemy.engine.base.Engine][MainThread] () - 2015-06-01 11:22:52,651 INFO [sqlalchemy.engine.base.Engine][MainThread] SELECT CAST('test unicode returns' AS VARCHAR(60)) AS anon_1 - 2015-06-01 11:22:52,651 INFO [sqlalchemy.engine.base.Engine][MainThread] () - 2015-06-01 11:22:52,652 INFO [sqlalchemy.engine.base.Engine][MainThread] PRAGMA table_info("wikipages") - 2015-06-01 11:22:52,652 INFO [sqlalchemy.engine.base.Engine][MainThread] () - 2015-06-01 11:22:52,653 INFO [sqlalchemy.engine.base.Engine][MainThread] + + 2016-04-16 13:01:33,055 INFO [sqlalchemy.engine.base.Engine][MainThread] SELECT CAST('test plain returns' AS VARCHAR(60)) AS anon_1 + 2016-04-16 13:01:33,055 INFO [sqlalchemy.engine.base.Engine][MainThread] () + 2016-04-16 13:01:33,056 INFO [sqlalchemy.engine.base.Engine][MainThread] SELECT CAST('test unicode returns' AS VARCHAR(60)) AS anon_1 + 2016-04-16 13:01:33,056 INFO [sqlalchemy.engine.base.Engine][MainThread] () + 2016-04-16 13:01:33,057 INFO [sqlalchemy.engine.base.Engine][MainThread] PRAGMA table_info("wikipages") + 2016-04-16 13:01:33,057 INFO [sqlalchemy.engine.base.Engine][MainThread] () + 2016-04-16 13:01:33,058 INFO [sqlalchemy.engine.base.Engine][MainThread] CREATE TABLE wikipages ( - uid INTEGER NOT NULL, - title TEXT, - body TEXT, - PRIMARY KEY (uid), - UNIQUE (title) + uid INTEGER NOT NULL, + title TEXT, + body TEXT, + PRIMARY KEY (uid), + UNIQUE (title) ) - 2015-06-01 11:22:52,653 INFO [sqlalchemy.engine.base.Engine][MainThread] () - 2015-06-01 11:22:52,655 INFO [sqlalchemy.engine.base.Engine][MainThread] COMMIT - 2015-06-01 11:22:52,658 INFO [sqlalchemy.engine.base.Engine][MainThread] BEGIN (implicit) - 2015-06-01 11:22:52,659 INFO [sqlalchemy.engine.base.Engine][MainThread] INSERT INTO wikipages (title, body) VALUES (?, ?) - 2015-06-01 11:22:52,659 INFO [sqlalchemy.engine.base.Engine][MainThread] ('Root', '<p>Root</p>') - 2015-06-01 11:22:52,659 INFO [sqlalchemy.engine.base.Engine][MainThread] COMMIT + 2016-04-16 13:01:33,058 INFO [sqlalchemy.engine.base.Engine][MainThread] () + 2016-04-16 13:01:33,059 INFO [sqlalchemy.engine.base.Engine][MainThread] COMMIT + 2016-04-16 13:01:33,062 INFO [sqlalchemy.engine.base.Engine][MainThread] BEGIN (implicit) + 2016-04-16 13:01:33,062 INFO [sqlalchemy.engine.base.Engine][MainThread] INSERT INTO wikipages (title, body) VALUES (?, ?) + 2016-04-16 13:01:33,063 INFO [sqlalchemy.engine.base.Engine][MainThread] ('Root', '<p>Root</p>') + 2016-04-16 13:01:33,063 INFO [sqlalchemy.engine.base.Engine][MainThread] COMMIT -#. With our data now driven by SQLAlchemy queries, we need to update - our ``databases/tutorial/views.py``: +#. With our data now driven by SQLAlchemy queries, we need to update our + ``databases/tutorial/views.py``: .. literalinclude:: databases/tutorial/views.py :linenos: -#. Our tests in ``databases/tutorial/tests.py`` changed to include - SQLAlchemy bootstrapping: +#. Our tests in ``databases/tutorial/tests.py`` changed to include SQLAlchemy + bootstrapping: .. literalinclude:: databases/tutorial/tests.py :linenos: -#. Run the tests in your package using ``nose``: +#. Run the tests in your package using ``py.test``: - .. code-block:: bash - - $ $VENV/bin/nosetests tutorial - .. - ----------------------------------------------------------------- - Ran 2 tests in 1.141s + .. code-block:: bash - OK + $ $VENV/bin/py.test tutorial/tests.py -q + .. + 2 passed in 1.41 seconds #. Run your Pyramid application with: @@ -144,57 +144,55 @@ Steps #. Open http://localhost:6543/ in a browser. + Analysis ======== -Let's start with the dependencies. We made the decision to use -``SQLAlchemy`` to talk to our database. We also, though, installed -``pyramid_tm`` and ``zope.sqlalchemy``. Why? +Let's start with the dependencies. We made the decision to use ``SQLAlchemy`` +to talk to our database. We also, though, installed ``pyramid_tm`` and +``zope.sqlalchemy``. Why? Pyramid has a strong orientation towards support for ``transactions``. -Specifically, you can install a transaction manager into your -application either as middleware or a Pyramid "tween". Then, -just before you return the response, all transaction-aware parts of -your application are executed. +Specifically, you can install a transaction manager into your application +either as middleware or a Pyramid "tween". Then, just before you return the +response, all transaction-aware parts of your application are executed. -This means Pyramid view code usually doesn't manage transactions. If -your view code or a template generates an error, the transaction manager -aborts the transaction. This is a very liberating way to write code. +This means Pyramid view code usually doesn't manage transactions. If your view +code or a template generates an error, the transaction manager aborts the +transaction. This is a very liberating way to write code. The ``pyramid_tm`` package provides a "tween" that is configured in the -``development.ini`` configuration file. That installs it. We then need -a package that makes SQLAlchemy, and thus the RDBMS transaction manager, -integrate with the Pyramid transaction manager. That's what -``zope.sqlalchemy`` does. +``development.ini`` configuration file. That installs it. We then need a +package that makes SQLAlchemy, and thus the RDBMS transaction manager, +integrate with the Pyramid transaction manager. That's what ``zope.sqlalchemy`` +does. Where do we point at the location on disk for the SQLite file? In the -configuration file. This lets consumers of our package change the -location in a safe (non-code) way. That is, in configuration. This -configuration-oriented approach isn't required in Pyramid; you can -still make such statements in your ``__init__.py`` or some companion -module. - -The ``initialize_tutorial_db`` is a nice example of framework support. -You point your setup at the location of some ``[console_scripts]`` and -these get generated into your virtual environment's ``bin`` directory. Our -console script follows the pattern of being fed a configuration file -with all the bootstrapping. It then opens SQLAlchemy and creates the -root of the wiki, which also makes the SQLite file. Note the -``with transaction.manager`` part that puts the work in the scope of a -transaction, as we aren't inside a web request where this is done -automatically. - -The ``models.py`` does a little bit extra work to hook up SQLAlchemy -into the Pyramid transaction manager. It then declares the model for a -``Page``. +configuration file. This lets consumers of our package change the location in a +safe (non-code) way. That is, in configuration. This configuration-oriented +approach isn't required in Pyramid; you can still make such statements in your +``__init__.py`` or some companion module. + +The ``initialize_tutorial_db`` is a nice example of framework support. You +point your setup at the location of some ``[console_scripts]``, and these get +generated into your virtual environment's ``bin`` directory. Our console script +follows the pattern of being fed a configuration file with all the +bootstrapping. It then opens SQLAlchemy and creates the root of the wiki, which +also makes the SQLite file. Note the ``with transaction.manager`` part that +puts the work in the scope of a transaction, as we aren't inside a web request +where this is done automatically. + +The ``models.py`` does a little bit of extra work to hook up SQLAlchemy into +the Pyramid transaction manager. It then declares the model for a ``Page``. Our views have changes primarily around replacing our dummy -dictionary-of-dictionaries data with proper database support: list the -rows, add a row, edit a row, and delete a row. +dictionary-of-dictionaries data with proper database support: list the rows, +add a row, edit a row, and delete a row. + -Extra Credit +Extra credit ============ -#. Why all this code? Why can't I just type 2 lines and have magic ensue? +#. Why all this code? Why can't I just type two lines and have magic ensue? #. Give a try at a button that deletes a wiki page. diff --git a/docs/quick_tutorial/databases/sqltutorial.sqlite b/docs/quick_tutorial/databases/sqltutorial.sqlite Binary files differdeleted file mode 100644 index b8bd856fd..000000000 --- a/docs/quick_tutorial/databases/sqltutorial.sqlite +++ /dev/null diff --git a/docs/quick_tutorial/debugtoolbar.rst b/docs/quick_tutorial/debugtoolbar.rst index 1f89cd319..aaf904390 100644 --- a/docs/quick_tutorial/debugtoolbar.rst +++ b/docs/quick_tutorial/debugtoolbar.rst @@ -6,31 +6,34 @@ Error handling and introspection using the ``pyramid_debugtoolbar`` add-on. + Background ========== -As we introduce the basics we also want to show how to be productive in -development and debugging. For example, we just discussed template -reloading and earlier we showed ``--reload`` for application reloading. +As we introduce the basics, we also want to show how to be productive in +development and debugging. For example, we just discussed template reloading, +and earlier we showed ``--reload`` for application reloading. + +``pyramid_debugtoolbar`` is a popular Pyramid add-on which makes several tools +available in your browser. Adding it to your project illustrates several points +about configuration. -``pyramid_debugtoolbar`` is a popular Pyramid add-on which makes -several tools available in your browser. Adding it to your project -illustrates several points about configuration. Objectives ========== -- Install and enable the toolbar to help during development +- Install and enable the toolbar to help during development. + +- Explain Pyramid add-ons. -- Explain Pyramid add-ons +- Show how an add-on gets configured into your application. -- Show how an add-on gets configured into your application Steps ===== -#. First we copy the results of the previous step, as well as install - the ``pyramid_debugtoolbar`` package: +#. First we copy the results of the previous step, as well as install the + ``pyramid_debugtoolbar`` package: .. code-block:: bash @@ -54,6 +57,7 @@ Steps #. Open http://localhost:6543/ in your browser. See the handy toolbar on the right. + Analysis ======== @@ -66,16 +70,16 @@ The ``pyramid_debugtoolbar`` Python package is also a Pyramid add-on, which means we need to include its add-on configuration into our web application. We could do this with imperative configuration in ``tutorial/__init__.py`` by using ``config.include``. Pyramid also supports wiring in add-on configuration -via our ``development.ini`` using ``pyramid.includes``. We use this to load -the configuration for the debugtoolbar. +via our ``development.ini`` using ``pyramid.includes``. We use this to load the +configuration for the debugtoolbar. You'll now see an attractive button on the right side of your browser, which -you may click to provide introspective access to debugging information in a -new browser tab. Even better, if your web application generates an error, you -will see a nice traceback on the screen. When you want to disable this -toolbar, there's no need to change code: you can remove it from -``pyramid.includes`` in the relevant ``.ini`` configuration file (thus showing -why configuration files are handy.) +you may click to provide introspective access to debugging information in a new +rowser tab. Even better, if your web application generates an error, you will +see a nice traceback on the screen. When you want to disable this toolbar, +there's no need to change code: you can remove it from ``pyramid.includes`` in +the relevant ``.ini`` configuration file (thus showing why configuration files +are handy). Note that the toolbar injects a small amount of HTML/CSS into your app just before the closing ``</body>`` tag in order to display itself. If you start to @@ -85,13 +89,14 @@ temporarily. .. seealso:: See also :ref:`pyramid_debugtoolbar <toolbar:overview>`. + Extra Credit ============ #. Why don't we add ``pyramid_debugtoolbar`` to the list of ``install_requires`` dependencies in ``debugtoolbar/setup.py``? -#. Introduce a bug into your application: Change: +#. Introduce a bug into your application. Change: .. code-block:: python @@ -105,7 +110,7 @@ Extra Credit def hello_world(request): return xResponse('<body><h1>Hello World!</h1></body>') - Save, and visit http://localhost:6543/ again. Notice the nice - traceback display. On the lowest line, click the "screen" icon to the - right, and try typing the variable names ``request`` and ``Response``. - What else can you discover? + Save, and visit http://localhost:6543/ again. Notice the nice traceback + display. On the lowest line, click the "screen" icon to the right, and try + typing the variable names ``request`` and ``Response``. What else can you + discover? diff --git a/docs/quick_tutorial/forms.rst b/docs/quick_tutorial/forms.rst index 023e7127f..6b29833bd 100644 --- a/docs/quick_tutorial/forms.rst +++ b/docs/quick_tutorial/forms.rst @@ -6,30 +6,30 @@ Schema-driven, autogenerated forms with validation. + Background ========== -Modern web applications deal extensively with forms. Developers, -though, have a wide range of philosophies about how frameworks should -help them with their forms. As such, Pyramid doesn't directly bundle -one particular form library. Instead there are a variety of form -libraries that are easy to use in Pyramid. +Modern web applications deal extensively with forms. Developers, though, have a +wide range of philosophies about how frameworks should help them with their +forms. As such, Pyramid doesn't directly bundle one particular form library. +Instead there are a variety of form libraries that are easy to use in Pyramid. -:ref:`Deform <deform:overview>` -is one such library. In this step, we introduce Deform for our -forms and validation. This also gives us :ref:`Colander <colander:overview>` +:ref:`Deform <deform:overview>` is one such library. In this step, we introduce +Deform for our forms. This also gives us :ref:`Colander <colander:overview>` for schemas and validation. -Deform is getting a facelift, with styling from Twitter Bootstrap and -advanced widgets from popular JavaScript projects. The work began in -``deform_bootstrap`` and is being merged into an update to Deform. +Deform uses styling from Twitter Bootstrap and advanced widgets from popular +JavaScript projects. + Objectives ========== -- Make a schema using Colander, the companion to Deform +- Make a schema using Colander, the companion to Deform. + +- Create a form with Deform and change our views to handle validation. -- Create a form with Deform and change our views to handle validation Steps ===== @@ -40,8 +40,8 @@ Steps $ cd ..; cp -r view_classes forms; cd forms -#. Let's edit ``forms/setup.py`` to declare a dependency on Deform - (which then pulls in Colander as a dependency: +#. Let's edit ``forms/setup.py`` to declare a dependency on Deform (which then + pulls in Colander as a dependency: .. literalinclude:: forms/setup.py :linenos: @@ -52,21 +52,19 @@ Steps $ $VENV/bin/pip install -e . -#. Register a static view in ``forms/tutorial/__init__.py`` for - Deform's CSS/JS etc. as well as our demo wikipage scenario's - views: +#. Register a static view in ``forms/tutorial/__init__.py`` for Deform's CSS, + JavaScript, etc., as well as our demo wiki page's views: .. literalinclude:: forms/tutorial/__init__.py :linenos: -#. Implement the new views, as well as the form schemas and some - dummy data, in ``forms/tutorial/views.py``: +#. Implement the new views, as well as the form schemas and some dummy data, in + ``forms/tutorial/views.py``: .. literalinclude:: forms/tutorial/views.py :linenos: -#. A template for the top of the "wiki" in - ``forms/tutorial/wiki_view.pt``: +#. A template for the top of the "wiki" in ``forms/tutorial/wiki_view.pt``: .. literalinclude:: forms/tutorial/wiki_view.pt :language: html @@ -79,13 +77,21 @@ Steps :language: html :linenos: -#. Finally, a template at ``forms/tutorial/wikipage_view.pt`` - for viewing a wiki page: +#. Finally, a template at ``forms/tutorial/wikipage_view.pt`` for viewing a + wiki page: .. literalinclude:: forms/tutorial/wikipage_view.pt :language: html :linenos: +#. Run the tests: + + .. code-block:: bash + + $ $VENV/bin/py.test tutorial/tests.py -q + .. + 2 passed in 0.45 seconds + #. Run your Pyramid application with: .. code-block:: bash @@ -98,51 +104,50 @@ Steps Analysis ======== -This step helps illustrate the utility of asset specifications for -static assets. We have an outside package called Deform with static -assets which need to be published. We don't have to know where on disk -it is located. We point at the package, then the path inside the package. - -We just need to include a call to ``add_static_view`` to make that -directory available at a URL. For Pyramid-specific packages, -Pyramid provides a facility (``config.include()``) which even makes -that unnecessary for consumers of a package. (Deform is not specific to -Pyramid.) - -Our forms have rich widgets which need the static CSS and JS just -mentioned. Deform has a :term:`resource registry` which allows widgets -to specify which JS and CSS are needed. Our ``wikipage_addedit.pt`` -template shows how we iterated over that data to generate markup that -includes the needed resources. - -Our add and edit views use a pattern called *self-posting forms*. -Meaning, the same URL is used to ``GET`` the form as is used to -``POST`` the form. The route, the view, and the template are the same -whether you are walking up to it the first time or you clicked a button. - -Inside the view we do ``if 'submit' in self.request.params:`` to see if -this form was a ``POST`` where the user clicked on a particular button +This step helps illustrate the utility of asset specifications for static +assets. We have an outside package called Deform with static assets which need +to be published. We don't have to know where on disk it is located. We point at +the package, then the path inside the package. + +We just need to include a call to ``add_static_view`` to make that directory +available at a URL. For Pyramid-specific packages, Pyramid provides a facility +(``config.include()``) which even makes that unnecessary for consumers of a +package. (Deform is not specific to Pyramid.) + +Our forms have rich widgets which need the static CSS and JavaScript just +mentioned. Deform has a :term:`resource registry` which allows widgets to +specify which JavaScript and CSS are needed. Our ``wikipage_addedit.pt`` +template shows how we iterated over that data to generate markup that includes +the needed resources. + +Our add and edit views use a pattern called *self-posting forms*. Meaning, the +same URL is used to ``GET`` the form as is used to ``POST`` the form. The +route, the view, and the template are the same URL whether you are walking up +to it for the first time or you clicked a button. + +Inside the view we do ``if 'submit' in self.request.params:`` to see if this +form was a ``POST`` where the user clicked on a particular button ``<input name="submit">``. The form controller then follows a typical pattern: -- If you are doing a GET, skip over and just return the form +- If you are doing a ``GET``, skip over and just return the form. + +- If you are doing a ``POST``, validate the form contents. -- If you are doing a POST, validate the form contents +- If the form is invalid, bail out by re-rendering the form with the supplied + ``POST`` data. -- If the form is invalid, bail out by re-rendering the form with the - supplied ``POST`` data +- If the validation succeeded, perform some action and issue a redirect via + ``HTTPFound``. -- If the validation succeeded, perform some action and issue a - redirect via ``HTTPFound``. +We are, in essence, writing our own form controller. Other Pyramid-based +systems, including ``pyramid_deform``, provide a form-centric view class which +automates much of this branching and routing. -We are, in essence, writing our own form controller. Other -Pyramid-based systems, including ``pyramid_deform``, provide a -form-centric view class which automates much of this branching and -routing. -Extra Credit +Extra credit ============ -#. Give a try at a button that goes to a delete view for a - particular wiki page. +#. Give a try at a button that goes to a delete view for a particular wiki + page. diff --git a/docs/quick_tutorial/functional_testing.rst b/docs/quick_tutorial/functional_testing.rst index b8aa7e87d..33793578a 100644 --- a/docs/quick_tutorial/functional_testing.rst +++ b/docs/quick_tutorial/functional_testing.rst @@ -6,30 +6,33 @@ Write end-to-end full-stack testing using ``webtest``. + Background ========== -Unit tests are a common and popular approach to test-driven development -(TDD). In web applications, though, the templating and entire apparatus -of a web site are important parts of the delivered quality. We'd like a -way to test these. +Unit tests are a common and popular approach to test-driven development (TDD). +In web applications, though, the templating and entire apparatus of a web site +are important parts of the delivered quality. We'd like a way to test these. + +`WebTest <http://docs.pylonsproject.org/projects/webtest/en/latest/>`_ is a +Python package that does functional testing. With WebTest you can write tests +which simulate a full HTTP request against a WSGI application, then test the +information in the response. For speed purposes, WebTest skips the +setup/teardown of an actual HTTP server, providing tests that run fast enough +to be part of TDD. -WebTest is a Python package that does functional testing. With WebTest -you can write tests which simulate a full HTTP request against a WSGI -application, then test the information in the response. For speed -purposes, WebTest skips the setup/teardown of an actual HTTP server, -providing tests that run fast enough to be part of TDD. Objectives ========== -- Write a test which checks the contents of the returned HTML +- Write a test which checks the contents of the returned HTML. + Steps ===== -#. First we copy the results of the previous step, as well as install - the ``webtest`` package: +#. First we copy the results of the previous step, as well as install the + ``webtest`` package: .. code-block:: bash @@ -43,31 +46,28 @@ Steps .. literalinclude:: functional_testing/tutorial/tests.py :linenos: - Be sure this file is not executable, or ``nosetests`` may not - include your tests. + Be sure this file is not executable, or ``pytest`` may not include your + tests. #. Now run the tests: .. code-block:: bash + $ $VENV/bin/py.test tutorial/tests.py -q + .. + 2 passed in 0.25 seconds - $ $VENV/bin/nosetests tutorial - . - ---------------------------------------------------------------------- - Ran 2 tests in 0.141s - - OK Analysis ======== -We now have the end-to-end testing we were looking for. WebTest lets us -simply extend our existing ``nose``-based test approach with functional -tests that are reported in the same output. These new tests not only -cover our templating, but they didn't dramatically increase the -execution time of our tests. +We now have the end-to-end testing we were looking for. WebTest lets us simply +extend our existing ``pytest``-based test approach with functional tests that +are reported in the same output. These new tests not only cover our templating, +but they didn't dramatically increase the execution time of our tests. + -Extra Credit +Extra credit ============ #. Why do our functional tests use ``b''``? diff --git a/docs/quick_tutorial/hello_world.rst b/docs/quick_tutorial/hello_world.rst index fb661e9c5..4e35da7bb 100644 --- a/docs/quick_tutorial/hello_world.rst +++ b/docs/quick_tutorial/hello_world.rst @@ -4,40 +4,40 @@ 01: Single-File Web Applications ================================ -What's the simplest way to get started in Pyramid? A single-file module. -No Python packages, no ``pip install -e .``, no other machinery. +What's the simplest way to get started in Pyramid? A single-file module. No +Python packages, no ``pip install -e .``, no other machinery. + Background ========== -Microframeworks are all the rage these days. "Microframework" is a -marketing term, not a technical one. They have a low mental overhead: -they do so little, the only things you have to worry about are *your -things*. +Microframeworks are all the rage these days. "Microframework" is a marketing +term, not a technical one. They have a low mental overhead: they do so little, +the only things you have to worry about are *your things*. + +Pyramid is special because it can act as a single-file module microframework. +You can have a single Python file that can be executed directly by Python. But +Pyramid also provides facilities to scale to the largest of applications. -Pyramid is special because it can act as a single-file module -microframework. You can have a single Python file that can be executed -directly by Python. But Pyramid also provides facilities to scale to -the largest of applications. +Python has a standard called :term:`WSGI` that defines how Python web +applications plug into standard servers, getting passed incoming requests, and +returning responses. Most modern Python web frameworks obey an "MVC" +(model-view-controller) application pattern, where the data in the model has a +view that mediates interaction with outside systems. -Python has a standard called :term:`WSGI` that defines how -Python web applications plug into standard servers, getting passed -incoming requests and returning responses. Most modern Python web -frameworks obey an "MVC" (model-view-controller) application pattern, -where the data in the model has a view that mediates interaction with -outside systems. +In this step we'll see a brief glimpse of WSGI servers, WSGI applications, +requests, responses, and views. -In this step we'll see a brief glimpse of WSGI servers, WSGI -applications, requests, responses, and views. Objectives ========== -- Get a running Pyramid web application, as simply as possible +- Get a running Pyramid web application, as simply as possible. + +- Use that as a well-understood base for adding each unit of complexity. -- Use that as a well-understood base for adding each unit of complexity +- Initial exposure to WSGI apps, requests, views, and responses. -- Initial exposure to WSGI apps, requests, views, and responses Steps ===== @@ -64,30 +64,29 @@ Steps #. Open http://localhost:6543/ in your browser. + Analysis ======== -New to Python web programming? If so, some lines in module merit +New to Python web programming? If so, some lines in the module merit explanation: -#. *Line 11*. The ``if __name__ == '__main__':`` is Python's way of - saying "Start here when running from the command line", rather than - when this module is imported. +#. *Line 11*. The ``if __name__ == '__main__':`` is Python's way of saying, + "Start here when running from the command line", rather than when this + module is imported. + +#. *Lines 12-14*. Use Pyramid's :term:`configurator` to connect :term:`view` + code to a particular URL :term:`route`. -#. *Lines 12-14*. Use Pyramid's :term:`configurator` to connect - :term:`view` code to a particular URL :term:`route`. +#. *Lines 6-8*. Implement the view code that generates the :term:`response`. -#. *Lines 6-8*. Implement the view code that generates the - :term:`response`. +#. *Lines 15-17*. Publish a :term:`WSGI` app using an HTTP server. -#. *Lines 15-17*. Publish a :term:`WSGI` app using an HTTP - server. +As shown in this example, the :term:`configurator` plays a central role in +Pyramid development. Building an application from loosely-coupled parts via +:ref:`configuration_narr` is a central idea in Pyramid, one that we will +revisit regularly in this *Quick Tutorial*. -As shown in this example, the :term:`configurator` plays a -central role in Pyramid development. Building an application from -loosely-coupled parts via :ref:`configuration_narr` is a -central idea in Pyramid, one that we will revisit regularly in this -*Quick Tour*. Extra Credit ============ @@ -106,9 +105,9 @@ Extra Credit #. What happens if you return a string of HTML? A sequence of integers? -#. Put something invalid, such as ``print xyz``, in the view function. - Kill your ``python app.py`` with ``cntrl-c`` and restart, - then reload your browser. See the exception in the console? +#. Put something invalid, such as ``print xyz``, in the view function. Kill + your ``python app.py`` with ``ctrl-C`` and restart, then reload your + browser. See the exception in the console? -#. The ``GI`` in ``WSGI`` stands for "Gateway Interface". What web - standard is this modelled after? +#. The ``GI`` in ``WSGI`` stands for "Gateway Interface". What web standard is + this modelled after? diff --git a/docs/quick_tutorial/index.rst b/docs/quick_tutorial/index.rst index 9373fe38a..29b4d8fb7 100644 --- a/docs/quick_tutorial/index.rst +++ b/docs/quick_tutorial/index.rst @@ -4,12 +4,12 @@ Quick Tutorial for Pyramid ========================== -Pyramid is a web framework for Python 2 and 3. This tutorial gives a -Python 3/2-compatible, high-level tour of the major features. +Pyramid is a web framework for Python 2 and 3. This tutorial gives a Python +3/2-compatible, high-level tour of the major features. -This hands-on tutorial covers "a little about a lot": practical -introductions to the most common facilities. Fun, fast-paced, and most -certainly not aimed at experts of the Pyramid web framework. +This hands-on tutorial covers "a little about a lot": practical introductions +to the most common facilities. Fun, fast-paced, and most certainly not aimed at +experts of the Pyramid web framework. Contents ======== diff --git a/docs/quick_tutorial/ini.rst b/docs/quick_tutorial/ini.rst index 0aed304df..fba5ce29e 100644 --- a/docs/quick_tutorial/ini.rst +++ b/docs/quick_tutorial/ini.rst @@ -7,28 +7,30 @@ Use Pyramid's ``pserve`` command with a ``.ini`` configuration file for simpler, better application running. + Background ========== -Pyramid has a first-class concept of -:ref:`configuration <configuration_narr>` distinct from code. -This approach is optional, but its presence makes it distinct from -other Python web frameworks. It taps into Python's ``setuptools`` -library, which establishes conventions for installing and providing -"entry points" for Python projects. Pyramid uses an entry point to -let a Pyramid application know where to find the WSGI app. +Pyramid has a first-class concept of :ref:`configuration <configuration_narr>` +distinct from code. This approach is optional, but its presence makes it +distinct from other Python web frameworks. It taps into Python's ``setuptools`` +library, which establishes conventions for installing and providing "entry +points" for Python projects. Pyramid uses an entry point to let a Pyramid +application know where to find the WSGI app. + Objectives ========== -- Modify our ``setup.py`` to have an entry point telling Pyramid the - location of the WSGI app +- Modify our ``setup.py`` to have an entry point telling Pyramid the location + of the WSGI app. + +- Create an application driven by an ``.ini`` file. -- Create an application driven by a ``.ini`` file +- Start the application with Pyramid's ``pserve`` command. -- Startup the application with Pyramid's ``pserve`` command +- Move code into the package's ``__init__.py``. -- Move code into the package's ``__init__.py`` Steps ===== @@ -39,14 +41,14 @@ Steps $ cd ..; cp -r package ini; cd ini -#. Our ``ini/setup.py`` needs a setuptools "entry point" in the - ``setup()`` function: +#. Our ``ini/setup.py`` needs a setuptools "entry point" in the ``setup()`` + function: .. literalinclude:: ini/setup.py :linenos: -#. We can now install our project, thus generating (or re-generating) an - "egg" at ``ini/tutorial.egg-info``: +#. We can now install our project, thus generating (or re-generating) an "egg" + at ``ini/tutorial.egg-info``: .. code-block:: bash @@ -58,8 +60,8 @@ Steps :language: ini :linenos: -#. We can refactor our startup code from the previous step's ``app.py`` - into ``ini/tutorial/__init__.py``: +#. We can refactor our startup code from the previous step's ``app.py`` into + ``ini/tutorial/__init__.py``: .. literalinclude:: ini/tutorial/__init__.py :linenos: @@ -81,27 +83,26 @@ Steps Analysis ======== -Our ``development.ini`` file is read by ``pserve`` and serves to -bootstrap our application. Processing then proceeds as described in -the Pyramid chapter on +Our ``development.ini`` file is read by ``pserve`` and serves to bootstrap our +application. Processing then proceeds as described in the Pyramid chapter on :ref:`application startup <startup_chapter>`: -- ``pserve`` looks for ``[app:main]`` and finds ``use = egg:tutorial`` +- ``pserve`` looks for ``[app:main]`` and finds ``use = egg:tutorial``. -- The projects's ``setup.py`` has defined an "entry point" (lines 9-12) - for the project "main" entry point of ``tutorial:main`` +- The projects's ``setup.py`` has defined an "entry point" (lines 9-12) for the + project's "main" entry point of ``tutorial:main``. -- The ``tutorial`` package's ``__init__`` has a ``main`` function +- The ``tutorial`` package's ``__init__`` has a ``main`` function. -- This function is invoked, with the values from certain ``.ini`` - sections passed in +- This function is invoked, with the values from certain ``.ini`` sections + passed in. The ``.ini`` file is also used for two other functions: -- *Configuring the WSGI server*. ``[server:main]`` wires up the choice of - which WSGI *server* for your WSGI *application*. In this case, we are using - ``wsgiref`` bundled in the Python library. It also wires up the *port - number*: ``port = 6543`` tells ``wsgiref`` to listen on port 6543. +- *Configuring the WSGI server*. ``[server:main]`` wires up the choice of which + WSGI *server* for your WSGI *application*. In this case, we are using + ``wsgiref`` bundled in the Python library. It also wires up the *port + number*: ``port = 6543`` tells ``wsgiref`` to listen on port 6543. - *Configuring Python logging*. Pyramid uses Python standard logging, which needs a number of configuration values. The ``.ini`` serves this function. @@ -109,27 +110,27 @@ The ``.ini`` file is also used for two other functions: request. We moved our startup code from ``app.py`` to the package's -``tutorial/__init__.py``. This isn't necessary, -but it is a common style in Pyramid to take the WSGI app bootstrapping -out of your module's code and put it in the package's ``__init__.py``. +``tutorial/__init__.py``. This isn't necessary, but it is a common style in +Pyramid to take the WSGI app bootstrapping out of your module's code and put it +in the package's ``__init__.py``. + +The ``pserve`` application runner has a number of command-line arguments and +options. We are using ``--reload`` which tells ``pserve`` to watch the +filesystem for changes to relevant code (Python files, the INI file, etc.) and, +when something changes, restart the application. Very handy during development. -The ``pserve`` application runner has a number of command-line arguments -and options. We are using ``--reload`` which tells ``pserve`` to watch -the filesystem for changes to relevant code (Python files, the INI file, -etc.) and, when something changes, restart the application. Very handy -during development. Extra Credit ============ -#. If you don't like configuration and/or ``.ini`` files, - could you do this yourself in Python code? +#. If you don't like configuration and/or ``.ini`` files, could you do this + yourself in Python code? -#. Can we have multiple ``.ini`` configuration files for a project? Why - might you want to do that? +#. Can we have multiple ``.ini`` configuration files for a project? Why might + you want to do that? -#. The entry point in ``setup.py`` didn't mention ``__init__.py`` when - it declared ``tutorial:main`` function. Why not? +#. The entry point in ``setup.py`` didn't mention ``__init__.py`` when it + declared ``tutorial:main`` function. Why not? #. What is the purpose of ``**settings``? What does the ``**`` signify? @@ -139,4 +140,3 @@ Extra Credit :ref:`what_is_this_pserve_thing`, :ref:`environment_chapter`, :ref:`paste_chapter` - diff --git a/docs/quick_tutorial/jinja2.rst b/docs/quick_tutorial/jinja2.rst index 6b9d5feba..2fc68827b 100644 --- a/docs/quick_tutorial/jinja2.rst +++ b/docs/quick_tutorial/jinja2.rst @@ -4,24 +4,26 @@ 12: Templating With ``jinja2`` ============================== -We just said Pyramid doesn't prefer one templating language over -another. Time to prove it. Jinja2 is a popular templating system, -used in Flask and modeled after Django's templates. Let's add -``pyramid_jinja2``, a Pyramid :term:`add-on` which enables Jinja2 as a -:term:`renderer` in our Pyramid applications. +We just said Pyramid doesn't prefer one templating language over another. Time +to prove it. Jinja2 is a popular templating system, used in Flask and modeled +after Django's templates. Let's add ``pyramid_jinja2``, a Pyramid +:term:`add-on` which enables Jinja2 as a :term:`renderer` in our Pyramid +applications. + Objectives ========== -- Show Pyramid's support for different templating systems +- Show Pyramid's support for different templating systems. + +- Learn about installing Pyramid add-ons. -- Learn about installing Pyramid add-ons Steps ===== -#. In this step let's start by copying the ``view_class`` step's - directory, and then installing the ``pyramid_jinja2`` add-on. +#. In this step let's start by copying the ``view_class`` step's directory, + and then installing the ``pyramid_jinja2`` add-on. .. code-block:: bash @@ -29,8 +31,7 @@ Steps $ $VENV/bin/pip install -e . $ $VENV/bin/pip install pyramid_jinja2 -#. We need to include ``pyramid_jinja2`` in - ``jinja2/tutorial/__init__.py``: +#. We need to include ``pyramid_jinja2`` in ``jinja2/tutorial/__init__.py``: .. literalinclude:: jinja2/tutorial/__init__.py :linenos: @@ -49,7 +50,9 @@ Steps .. code-block:: bash - $ $VENV/bin/nosetests tutorial + $ $VENV/bin/py.test tutorial/tests.py -q + .... + 4 passed in 0.40 seconds #. Run your Pyramid application with: @@ -59,30 +62,30 @@ Steps #. Open http://localhost:6543/ in your browser. + Analysis ======== -Getting a Pyramid add-on into Pyramid is simple. First you use normal -Python package installation tools to install the add-on package into -your Python. You then tell Pyramid's configurator to run the setup code +Getting a Pyramid add-on into Pyramid is simple. First you use normal Python +package installation tools to install the add-on package into your Python +virtual environment. You then tell Pyramid's configurator to run the setup code in the add-on. In this case the setup code told Pyramid to make a new "renderer" available that looked for ``.jinja2`` file extensions. -Our view code stayed largely the same. We simply changed the file -extension on the renderer. For the template, the syntax for Chameleon -and Jinja2's basic variable insertion is very similar. +Our view code stayed largely the same. We simply changed the file extension on +the renderer. For the template, the syntax for Chameleon and Jinja2's basic +variable insertion is very similar. + -Extra Credit +Extra credit ============ -#. Our project now depends on ``pyramid_jinja2``. We installed that - dependency manually. What is another way we could have made the - association? +#. Our project now depends on ``pyramid_jinja2``. We installed that dependency + manually. What is another way we could have made the association? #. We used ``config.include`` which is an imperative configuration to get the - :term:`Configurator` to load ``pyramid_jinja2``'s configuration. - What is another way could include it into the config? + :term:`Configurator` to load ``pyramid_jinja2``'s configuration. What is + another way could include it into the config? -.. seealso:: `Jinja2 homepage <http://jinja.pocoo.org/>`_, - and +.. seealso:: `Jinja2 homepage <http://jinja.pocoo.org/>`_, and :ref:`pyramid_jinja2 Overview <jinja2:overview>` diff --git a/docs/quick_tutorial/json.rst b/docs/quick_tutorial/json.rst index 49421829b..ff153d2b5 100644 --- a/docs/quick_tutorial/json.rst +++ b/docs/quick_tutorial/json.rst @@ -1,27 +1,28 @@ .. _qtut_json: ======================================== -14: Ajax Development With JSON Renderers +14: AJAX Development With JSON Renderers ======================================== -Modern web apps are more than rendered HTML. Dynamic pages now use -JavaScript to update the UI in the browser by requesting server data as -JSON. Pyramid supports this with a *JSON renderer*. +Modern web apps are more than rendered HTML. Dynamic pages now use JavaScript +to update the UI in the browser by requesting server data as JSON. Pyramid +supports this with a *JSON renderer*. + Background ========== -As we saw in :doc:`templating`, view declarations can specify a -renderer. Output from the view is then run through the renderer, -which generates and returns the ``Response``. We first used a Chameleon -renderer, then a Jinja2 renderer. +As we saw in :doc:`templating`, view declarations can specify a renderer. +Output from the view is then run through the renderer, which generates and +returns the response. We first used a Chameleon renderer, then a Jinja2 +renderer. + +Renderers aren't limited, however, to templates that generate HTML. Pyramid +supplies a JSON renderer which takes Python data, serializes it to JSON, and +performs some other functions such as setting the content type. In fact you can +write your own renderer (or extend a built-in renderer) containing custom logic +for your unique application. -Renderers aren't limited, however, to templates that generate HTML. -Pyramid supplies a JSON renderer which takes Python data, -serializes it to JSON, and performs some other functions such as -setting the content type. In fact, you can write your own renderer (or -extend a built-in renderer) containing custom logic for your unique -application. Steps ===== @@ -33,20 +34,18 @@ Steps $ cd ..; cp -r view_classes json; cd json $ $VENV/bin/pip install -e . -#. We add a new route for ``hello_json`` in - ``json/tutorial/__init__.py``: +#. We add a new route for ``hello_json`` in ``json/tutorial/__init__.py``: .. literalinclude:: json/tutorial/__init__.py :linenos: -#. Rather than implement a new view, we will "stack" another decorator - on the ``hello`` view in ``views.py``: +#. Rather than implement a new view, we will "stack" another decorator on the + ``hello`` view in ``views.py``: .. literalinclude:: json/tutorial/views.py :linenos: -#. We need a new functional test at the end of - ``json/tutorial/tests.py``: +#. We need a new functional test at the end of ``json/tutorial/tests.py``: .. literalinclude:: json/tutorial/tests.py :linenos: @@ -55,7 +54,10 @@ Steps .. code-block:: bash - $ $VENV/bin/nosetests tutorial + $ $VENV/bin/py.test tutorial/tests.py -q + ..... + 5 passed in 0.47 seconds + #. Run your Pyramid application with: @@ -63,40 +65,39 @@ Steps $ $VENV/bin/pserve development.ini --reload -#. Open http://localhost:6543/howdy.json in your browser and you - will see the resulting JSON response. +#. Open http://localhost:6543/howdy.json in your browser and you will see the + resulting JSON response. + Analysis ======== -Earlier we changed our view functions and methods to return Python -data. This change to a data-oriented view layer made test writing -easier, decoupling the templating from the view logic. +Earlier we changed our view functions and methods to return Python data. This +change to a data-oriented view layer made test writing easier, decoupling the +templating from the view logic. -Since Pyramid has a JSON renderer as well as the templating renderers, -it is an easy step to return JSON. In this case we kept the exact same -view and arranged to return a JSON encoding of the view data. We did -this by: +Since Pyramid has a JSON renderer as well as the templating renderers, it is an +easy step to return JSON. In this case we kept the exact same view and arranged +to return a JSON encoding of the view data. We did this by: -- Adding a route to map ``/howdy.json`` to a route name +- Adding a route to map ``/howdy.json`` to a route name. -- Providing a ``@view_config`` that associated that route name with an - existing view +- Providing a ``@view_config`` that associated that route name with an existing + view. -- *overriding* the view defaults in the view config that mentions the - ``hello_json`` route, so that when the route is matched, we use the JSON +- *Overriding* the view defaults in the view config that mentions the + ``hello_json`` route, so that when the route is matched, we use the JSON renderer rather than the ``home.pt`` template renderer that would otherwise be used. -In fact, for pure Ajax-style web applications, we could re-use the existing -route by using Pyramid's view predicates to match on the -``Accepts:`` header sent by modern Ajax implementation. +In fact, for pure AJAX-style web applications, we could re-use the existing +route by using Pyramid's view predicates to match on the ``Accepts:`` header +sent by modern AJAX implementations. -Pyramid's JSON renderer uses the base Python JSON encoder, -thus inheriting its strengths and weaknesses. For example, -Python can't natively JSON encode DateTime objects. There are a number -of solutions for this in Pyramid, including extending the JSON renderer -with a custom renderer. +Pyramid's JSON renderer uses the base Python JSON encoder, thus inheriting its +strengths and weaknesses. For example, Python can't natively JSON encode +DateTime objects. There are a number of solutions for this in Pyramid, +including extending the JSON renderer with a custom renderer. .. seealso:: :ref:`views_which_use_a_renderer`, :ref:`json_renderer`, and diff --git a/docs/quick_tutorial/logging.rst b/docs/quick_tutorial/logging.rst index 556a09bf0..cbbf7860e 100644 --- a/docs/quick_tutorial/logging.rst +++ b/docs/quick_tutorial/logging.rst @@ -4,28 +4,30 @@ 16: Collecting Application Info With Logging ============================================ -Capture debugging and error output from your web applications using -standard Python logging. +Capture debugging and error output from your web applications using standard +Python logging. + Background ========== -It's important to know what is going on inside our web application. -In development we might need to collect some output. In production, -we might need to detect problems when other people use the site. We -need *logging*. +It's important to know what is going on inside our web application. In +development we might need to collect some output. In production, we might need +to detect problems when other people use the site. We need *logging*. + +Fortunately Pyramid uses the normal Python approach to logging. The scaffold +generated in your ``development.ini`` has a number of lines that configure the +logging for you to some reasonable defaults. You then see messages sent by +Pyramid, for example, when a new request comes in. -Fortunately Pyramid uses the normal Python approach to logging. The -scaffold generated in your ``development.ini`` has a number of lines that -configure the logging for you to some reasonable defaults. You then see -messages sent by Pyramid, for example, when a new request comes in. Objectives ========== -- Inspect the configuration setup used for logging +- Inspect the configuration setup used for logging. + +- Add logging statements to your view code. -- Add logging statements to your view code Steps ===== @@ -42,8 +44,8 @@ Steps .. literalinclude:: logging/tutorial/views.py :linenos: -#. Finally let's edit ``development.ini`` configuration file - to enable logging for our Pyramid application: +#. Finally let's edit ``development.ini`` configuration file to enable logging + for our Pyramid application: .. literalinclude:: logging/development.ini :language: ini @@ -52,7 +54,9 @@ Steps .. code-block:: bash - $ $VENV/bin/nosetests tutorial + $ $VENV/bin/py.test tutorial/tests.py -q + .... + 4 passed in 0.41 seconds #. Run your Pyramid application with: @@ -60,19 +64,21 @@ Steps $ $VENV/bin/pserve development.ini --reload -#. Open http://localhost:6543/ and http://localhost:6543/howdy - in your browser. Note, both in the console and in the debug - toolbar, the message that you logged. +#. Open http://localhost:6543/ and http://localhost:6543/howdy in your browser. + Note, both in the console and in the debug toolbar, the message that you + logged. + Analysis ======== -In our configuration file ``development.ini``, our ``tutorial`` Python -package is setup as a logger and configured to log messages at a -``DEBUG`` or higher level. When you visit http://localhost:6543 your -console will now show:: +In our configuration file ``development.ini``, our ``tutorial`` Python package +is set up as a logger and configured to log messages at a ``DEBUG`` or higher +level. When you visit http://localhost:6543, your console will now show: + +.. code-block:: text - 2013-08-09 10:42:42,968 DEBUG [tutorial.views][MainThread] In home view + 2013-08-09 10:42:42,968 DEBUG [tutorial.views][MainThread] In home view Also, if you have configured your Pyramid application to use the ``pyramid_debugtoolbar``, logging statements appear in one of its menus. diff --git a/docs/quick_tutorial/more_view_classes.rst b/docs/quick_tutorial/more_view_classes.rst index fb97cceb2..30234ea2e 100644 --- a/docs/quick_tutorial/more_view_classes.rst +++ b/docs/quick_tutorial/more_view_classes.rst @@ -6,48 +6,49 @@ Group views into a class, sharing configuration, state, and logic. + Background ========== -As part of its mission to help build more ambitious web applications, -Pyramid provides many more features for views and view classes. +As part of its mission to help build more ambitious web applications, Pyramid +provides many more features for views and view classes. + +The Pyramid documentation discusses views as a Python "callable". This callable +can be a function, an object with a ``__call__``, or a Python class. In this +last case, methods on the class can be decorated with ``@view_config`` to +register the class methods with the :term:`configurator` as a view. -The Pyramid documentation discusses views as a Python "callable". This -callable can be a function, an object with an ``__call__``, -or a Python class. In this last case, methods on the class can be -decorated with ``@view_config`` to register the class methods with the -:term:`configurator` as a view. +At first, our views were simple, free-standing functions. Many times your views +are related: different ways to look at or work on the same data, or a REST API +that handles multiple operations. Grouping these together as a :ref:`view class +<class_as_view>` makes sense: -At first, our views were simple, free-standing functions. Many times -your views are related: different ways to look at or work on the same -data or a REST API that handles multiple operations. Grouping these -together as a :ref:`view class <class_as_view>` makes sense: +- Group views. -- Group views +- Centralize some repetitive defaults. -- Centralize some repetitive defaults +- Share some state and helpers. -- Share some state and helpers +Pyramid views have :ref:`view predicates <view_configuration_parameters>` that +determine which view is matched to a request, based on factors such as the +request method, the form parameters, and so on. These predicates provide many +axes of flexibility. -Pyramid views have :ref:`view predicates <view_configuration_parameters>` -that determine which view is matched to a request, based on factors -such as the request method, the form parameters, etc. These predicates -provide many axes of flexibility. +The following shows a simple example with four operations: view a home page +which leads to a form, save a change, and press the delete button. -The following shows a simple example with four operations: -view a home page which leads to a form, save a change, -and press the delete button. Objectives ========== -- Group related views into a view class +- Group related views into a view class. -- Centralize configuration with class-level ``@view_defaults`` +- Centralize configuration with class-level ``@view_defaults``. -- Dispatch one route/URL to multiple views based on request data +- Dispatch one route/URL to multiple views based on request data. + +- Share states and logic between views and templates via the view class. -- Share states and logic between views and templates via the view class Steps ===== @@ -71,8 +72,7 @@ Steps .. literalinclude:: more_view_classes/tutorial/views.py :linenos: -#. Our primary view needs a template at - ``more_view_classes/tutorial/home.pt``: +#. Our primary view needs a template at ``more_view_classes/tutorial/home.pt``: .. literalinclude:: more_view_classes/tutorial/home.pt :language: html @@ -105,12 +105,9 @@ Steps .. code-block:: bash - $ $VENV/bin/nosetests tutorial - . - ---------------------------------------------------------------------- - Ran 2 tests in 0.248s - - OK + $ $VENV/bin/py.test tutorial/tests.py -q + .. + 2 passed in 0.40 seconds #. Run your Pyramid application with: @@ -118,29 +115,27 @@ Steps $ $VENV/bin/pserve development.ini --reload -#. Open http://localhost:6543/howdy/jane/doe in your browser. Click - the ``Save`` and ``Delete`` buttons and watch the output in the - console window. +#. Open http://localhost:6543/howdy/jane/doe in your browser. Click the + ``Save`` and ``Delete`` buttons, and watch the output in the console window. + Analysis ======== -As you can see, the four views are logically grouped together. -Specifically: +As you can see, the four views are logically grouped together. Specifically: -- We have a ``home`` view available at http://localhost:6543/ with - a clickable link to the ``hello`` view. +- We have a ``home`` view available at http://localhost:6543/ with a clickable + link to the ``hello`` view. -- The second view is returned when you go to ``/howdy/jane/doe``. This - URL is +- The second view is returned when you go to ``/howdy/jane/doe``. This URL is mapped to the ``hello`` route that we centrally set using the optional ``@view_defaults``. -- The third view is returned when the form is submitted with a ``POST`` - method. This rule is specified in the ``@view_config`` for that view. +- The third view is returned when the form is submitted with a ``POST`` method. + This rule is specified in the ``@view_config`` for that view. -- The fourth view is returned when clicking on a button such - as ``<input type="submit" name="form.delete" value="Delete"/>``. +- The fourth view is returned when clicking on a button such as ``<input + type="submit" name="form.delete" value="Delete"/>``. In this step we show, using the following information as criteria, how to decide which view to use: @@ -149,49 +144,53 @@ decide which view to use: - Parameter information in the request (submitted form field names) -We also centralize part of the view configuration to the class level -with ``@view_defaults``, then in one view, override that default just -for that one view. Finally, we put this commonality between views to -work in the view class by sharing: +We also centralize part of the view configuration to the class level with +``@view_defaults``, then in one view, override that default just for that one +view. Finally, we put this commonality between views to work in the view class +by sharing: - State assigned in ``TutorialViews.__init__`` - A computed value -These are then available both in the view methods but also in the -templates (e.g. ``${view.view_name}`` and ``${view.full_name}``. +These are then available both in the view methods and in the templates (e.g., +``${view.view_name}`` and ``${view.full_name}``). + +As a note, we made a switch in our templates on how we generate URLs. We +previously hardcoded the URLs, such as: -As a note, we made a switch in our templates on how we generate URLs. -We previously hardcode the URLs, such as:: +.. code-block:: html <a href="/howdy/jane/doe">Howdy</a> -In ``home.pt`` we switched to:: +In ``home.pt`` we switched to: + +.. code-block:: xml <a href="${request.route_url('hello', first='jane', last='doe')}">form</a> -Pyramid has rich facilities to help generate URLs in a flexible, -non-error-prone fashion. +Pyramid has rich facilities to help generate URLs in a flexible, non-error +prone fashion. -Extra Credit +Extra credit ============ #. Why could our template do ``${view.full_name}`` and not have to do ``${view.full_name()}``? -#. The ``edit`` and ``delete`` views are both submitted to with - ``POST``. Why does the ``edit`` view configuration not catch the - ``POST`` used by ``delete``? +#. The ``edit`` and ``delete`` views are both receive ``POST`` requests. Why + does the ``edit`` view configuration not catch the ``POST`` used by + ``delete``? -#. We used Python ``@property`` on ``full_name``. If we reference this - many times in a template or view code, it would re-compute this - every time. Does Pyramid provide something that will cache the initial - computation on a property? +#. We used Python ``@property`` on ``full_name``. If we reference this many + times in a template or view code, it would re-compute this every time. Does + Pyramid provide something that will cache the initial computation on a + property? #. Can you associate more than one route with the same view? -#. There is also a ``request.route_path`` API. How does this differ from +#. There is also a ``request.route_path`` API. How does this differ from ``request.route_url``? .. seealso:: :ref:`class_as_view`, `Weird Stuff You Can Do With diff --git a/docs/quick_tutorial/package.rst b/docs/quick_tutorial/package.rst index 6a379032e..94cb39fc9 100644 --- a/docs/quick_tutorial/package.rst +++ b/docs/quick_tutorial/package.rst @@ -3,16 +3,17 @@ ============================================ Most modern Python development is done using Python packages, an approach -Pyramid puts to good use. In this step we redo "Hello World" as a -minimum Python package inside a minimum Python project. +Pyramid puts to good use. In this step we redo "Hello World" as a minimal +Python package inside a minimal Python project. + Background ========== Python developers can organize a collection of modules and files into a -namespaced unit called a :ref:`package <python:tut-packages>`. If a -directory is on ``sys.path`` and has a special file named -``__init__.py``, it is treated as a Python package. +namespaced unit called a :ref:`package <python:tut-packages>`. If a directory +is on ``sys.path`` and has a special file named ``__init__.py``, it is treated +as a Python package. Packages can be bundled up, made available for installation, and installed through a toolchain oriented around a ``setup.py`` file. For this tutorial, @@ -34,6 +35,7 @@ In summary: - That package will be part of a *project*. + Objectives ========== @@ -43,6 +45,7 @@ Objectives - Install our ``tutorial`` project in development mode. + Steps ===== @@ -56,8 +59,8 @@ Steps .. literalinclude:: package/setup.py -#. Make the new project installed for development then make a directory - for the actual code: +#. Make the new project installed for development then make a directory for the + actual code: .. code-block:: bash @@ -80,26 +83,27 @@ Steps #. Open http://localhost:6543/ in your browser. + Analysis ======== -Python packages give us an organized unit of project development. -Python projects, via ``setup.py``, gives us special features when -our package is installed (in this case, in local development mode.) +Python packages give us an organized unit of project development. Python +projects, via ``setup.py``, give us special features when our package is +installed (in this case, in local development mode, also called local editable +mode as indicated by ``-e .``). -In this step we have a Python package called ``tutorial``. We use the -same name in each step of the tutorial, to avoid unnecessary retyping. +In this step we have a Python package called ``tutorial``. We use the same name +in each step of the tutorial, to avoid unnecessary retyping. -Above this ``tutorial`` directory we have the files that handle the -packaging of this project. At the moment, all we need is a -bare-bones ``setup.py``. +Above this ``tutorial`` directory we have the files that handle the packaging +of this project. At the moment, all we need is a bare-bones ``setup.py``. -Everything else is the same about our application. We simply made a -Python package with a ``setup.py`` and installed it in development mode. +Everything else is the same about our application. We simply made a Python +package with a ``setup.py`` and installed it in development mode. Note that the way we're running the app (``python tutorial/app.py``) is a bit of an odd duck. We would never do this unless we were writing a tutorial that -tries to capture how this stuff works a step at a time. It's generally a bad +tries to capture how this stuff works one step at a time. It's generally a bad idea to run a Python module inside a package directly as a script. .. seealso:: :ref:`Python Packages <python:tut-packages>` and `Working in diff --git a/docs/quick_tutorial/request_response.rst b/docs/quick_tutorial/request_response.rst index f42423de8..0ac9b4f6d 100644 --- a/docs/quick_tutorial/request_response.rst +++ b/docs/quick_tutorial/request_response.rst @@ -5,33 +5,32 @@ ======================================= Web applications handle incoming requests and return outgoing responses. -Pyramid makes working with requests and responses convenient and -reliable. +Pyramid makes working with requests and responses convenient and reliable. + Objectives ========== -- Learn the background on Pyramid's choices for requests and responses +- Learn the background on Pyramid's choices for requests and responses. + +- Grab data out of the request. -- Grab data out of the request +- Change information in the response headers. -- Change information in the response headers Background ========== -Developing for the web means processing web requests. As this is a -critical part of a web application, web developers need a robust, -mature set of software for web requests and returning web -responses. +Developing for the web means processing web requests. As this is a critical +part of a web application, web developers need a robust, mature set of software +for web requests and returning web responses. + +Pyramid has always fit nicely into the existing world of Python web development +(virtual environments, packaging, scaffolding, first to embrace Python 3, and +so on). Pyramid turned to the well-regarded :term:`WebOb` Python library for +request and response handling. In our example above, Pyramid hands +``hello_world`` a ``request`` that is :ref:`based on WebOb <webob_chapter>`. -Pyramid has always fit nicely into the existing world of Python web -development (virtual environments, packaging, scaffolding, -first to embrace Python 3, etc.) For request handling, Pyramid turned -to the well-regarded :term:`WebOb` Python library for request and -response handling. In our example -above, Pyramid hands ``hello_world`` a ``request`` that is -:ref:`based on WebOb <webob_chapter>`. Steps ===== @@ -62,7 +61,9 @@ Steps .. code-block:: bash - $ $VENV/bin/nosetests tutorial + $ $VENV/bin/py.test tutorial/tests.py -q + ..... + 5 passed in 0.30 seconds #. Run your Pyramid application with: @@ -70,37 +71,39 @@ Steps $ $VENV/bin/pserve development.ini --reload -#. Open http://localhost:6543/ in your browser. You will be - redirected to http://localhost:6543/plain +#. Open http://localhost:6543/ in your browser. You will be redirected to + http://localhost:6543/plain. #. Open http://localhost:6543/plain?name=alice in your browser. + Analysis ======== -In this view class we have two routes and two views, with the first -leading to the second by an HTTP redirect. Pyramid can -:ref:`generate redirects <http_redirect>` by returning a -special object from a view or raising a special exception. +In this view class, we have two routes and two views, with the first leading to +the second by an HTTP redirect. Pyramid can :ref:`generate redirects +<http_redirect>` by returning a special object from a view or raising a special +exception. + +In this Pyramid view, we get the URL being visited from ``request.url``. Also, +if you visited http://localhost:6543/plain?name=alice, the name is included in +the body of the response: -In this Pyramid view, we get the URL being visited from ``request.url``. -Also, if you visited http://localhost:6543/plain?name=alice, -the name is included in the body of the response:: +.. code-block:: text URL http://localhost:6543/plain?name=alice with name: alice -Finally, we set the response's content type and body, then return the -Response. +Finally, we set the response's content type and body, then return the response. + +We updated the unit and functional tests to prove that our code does the +redirection, but also handles sending and not sending ``/plain?name``. -We updated the unit and functional tests to prove that our code -does the redirection, but also handles sending and not sending -``/plain?name``. -Extra Credit +Extra credit ============ -#. Could we also ``raise HTTPFound(location='/plain')`` instead of - returning it? If so, what's the difference? +#. Could we also ``raise HTTPFound(location='/plain')`` instead of returning + it? If so, what's the difference? .. seealso:: :ref:`webob_chapter`, :ref:`generate redirects <http_redirect>` diff --git a/docs/quick_tutorial/requirements.rst b/docs/quick_tutorial/requirements.rst index 9e10e3ebe..1f2b4da97 100644 --- a/docs/quick_tutorial/requirements.rst +++ b/docs/quick_tutorial/requirements.rst @@ -6,41 +6,44 @@ Requirements Let's get our tutorial environment set up. Most of the set up work is in standard Python development practices (install Python and make an isolated -environment.) +virtual environment.) .. note:: - Pyramid encourages standard Python development practices with - packaging tools, virtual environments, logging, and so on. There - are many variations, implementations, and opinions across the Python - community. For consistency, ease of documentation maintenance, - and to minimize confusion, the Pyramid *documentation* has adopted - specific conventions. + Pyramid encourages standard Python development practices with packaging + tools, virtual environments, logging, and so on. There are many variations, + implementations, and opinions across the Python community. For consistency, + ease of documentation maintenance, and to minimize confusion, the Pyramid + *documentation* has adopted specific conventions that are consistent with the + :term:`Python Packaging Authority`. This *Quick Tutorial* is based on: -* **Python 3.5**. Pyramid fully supports Python 3.3+ and Python 2.6+. This +* **Python 3.5**. Pyramid fully supports Python 3.3+ and Python 2.7+. This tutorial uses **Python 3.5** but runs fine under Python 2.7. * **venv**. We believe in virtual environments. For this tutorial, we use - Python 3.5's built-in solution ``venv``. For Python 2.7, you can install - ``virtualenv``. + Python 3.5's built-in solution :term:`venv`. For Python 2.7, you can install + :term:`virtualenv`. -* **pip**. We use ``pip`` for package management. +* **pip**. We use :term:`pip` for package management. -* **Workspaces, projects, and packages.** Our home directory - will contain a *tutorial workspace* with our Python virtual - environment(s) and *Python projects* (a directory with packaging - information and *Python packages* of working code.) +* **Workspaces, projects, and packages.** Our home directory will contain a + *tutorial workspace* with our Python virtual environment and *Python + projects* (a directory with packaging information and *Python packages* of + working code.) -* **Unix commands**. Commands in this tutorial use UNIX syntax and - paths. Windows users should adjust commands accordingly. +* **Unix commands**. Commands in this tutorial use UNIX syntax and paths. + Windows users should adjust commands accordingly. .. note:: - Pyramid was one of the first web frameworks to fully support Python 3 in October 2011. +.. note:: + Windows commands use the plain old MSDOS shell. For PowerShell command + syntax, see its documentation. + Steps ===== @@ -56,27 +59,12 @@ Steps Install Python 3 ---------------- -Windows and Mac OS X users can download and run an installer. - -Download the latest standard Python 3 release (not development release) from -`python.org <https://www.python.org/downloads/>`_. - -Windows users should also install the `Python for Windows extensions -<http://sourceforge.net/projects/pywin32/files/pywin32/>`_. Carefully read the -``README.txt`` file at the end of the list of builds, and follow its -directions. Make sure you get the proper 32- or 64-bit build and Python -version. +See the detailed recommendation for your operating system described under +:ref:`installing_chapter`. -Linux users can either use their package manager to install Python 3 -or may `build Python 3 from source -<http://pyramid.readthedocs.org/en/master/narr/install.html#package-manager- -method>`_. - -.. seealso:: See also :ref:`For Mac OS X Users <for-mac-os-x-users>`, :ref:`If - You Don't Yet Have a Python Interpreter (UNIX) - <if-you-don-t-yet-have-a-python-interpreter-unix>`, and :ref:`If You Don't - Yet Have a Python Interpreter (Windows) - <if-you-don-t-yet-have-a-python-interpreter-windows>`. +- :ref:`for-mac-os-x-users` +- :ref:`if-you-don-t-yet-have-a-python-interpreter-unix` +- :ref:`if-you-don-t-yet-have-a-python-interpreter-windows` .. _create-a-project-directory-structure: @@ -84,11 +72,10 @@ method>`_. Create a project directory structure ------------------------------------ -We will arrive at a directory structure of -``workspace->project->package``, with our workspace named -``quick_tutorial``. The following tree diagram shows how this will be -structured and where our virtual environment will reside as we proceed through -the tutorial: +We will arrive at a directory structure of ``workspace -> project -> package``, +where our workspace is named ``quick_tutorial``. The following tree diagram +shows how this will be structured, and where our :term:`virtual environment` +will reside as we proceed through the tutorial: .. code-block:: text @@ -113,49 +100,47 @@ For Linux, the commands to do so are as follows: For Windows: -.. code-block:: ps1con +.. code-block:: doscon # Windows c:\> cd \ c:\> mkdir projects\quick_tutorial c:\> cd projects\quick_tutorial -In the above figure, your user home directory is represented by ``~``. In -your home directory, all of your projects are in the ``projects`` directory. -This is a general convention not specific to Pyramid that many developers use. -Windows users will do well to use ``c:\`` as the location for ``projects`` in -order to avoid spaces in any of the path names. +In the above figure, your user home directory is represented by ``~``. In your +home directory, all of your projects are in the ``projects`` directory. This is +a general convention not specific to Pyramid that many developers use. Windows +users will do well to use ``c:\`` as the location for ``projects`` in order to +avoid spaces in any of the path names. Next within ``projects`` is your workspace directory, here named ``quick_tutorial``. A workspace is a common term used by integrated -development environments (IDE) like PyCharm and PyDev that stores -isolated Python environments (virtual environments) and specific project files -and repositories. +development environments (IDE), like PyCharm and PyDev, where virtual +environments, specific project files, and repositories are stored. .. _set-an-environment-variable: -Set an Environment Variable +Set an environment variable --------------------------- -This tutorial will refer frequently to the location of the virtual -environment. We set an environment variable to save typing later. +This tutorial will refer frequently to the location of the :term:`virtual +environment`. We set an environment variable to save typing later. .. code-block:: bash # Mac and Linux $ export VENV=~/projects/quick_tutorial/env -.. code-block:: ps1con +.. code-block:: doscon # Windows - # TODO: This command does not work c:\> set VENV=c:\projects\quick_tutorial\env .. _create-a-virtual-environment: -Create a Virtual Environment +Create a virtual environment ---------------------------- ``venv`` is a tool to create isolated Python 3 environments, each with its own @@ -168,7 +153,7 @@ environment variable. # Mac and Linux $ python3 -m venv $VENV -.. code-block:: ps1con +.. code-block:: doscon # Windows c:\> c:\Python35\python3 -m venv %VENV% @@ -177,13 +162,31 @@ environment variable. 2's `virtualenv <https://virtualenv.pypa.io/en/latest/>`_ package. +Update packaging tools in the virtual environment +------------------------------------------------- + +It's always a good idea to update to the very latest version of packaging tools +because the installed Python bundles only the version that was available at the +time of its release. + +.. code-block:: bash + + # Mac and Linux + $VENV/bin/pip install --upgrade pip setuptools + +.. code-block:: doscon + + # Windows + c:\> %VENV%\Scripts\pip install --upgrade pip setuptools + + .. _install-pyramid: Install Pyramid --------------- We have our Python standard prerequisites out of the way. The Pyramid -part is pretty easy: +part is pretty easy. .. parsed-literal:: @@ -195,18 +198,17 @@ part is pretty easy: Our Python virtual environment now has the Pyramid software available. -You can optionally install some of the extra Python packages used -during this tutorial: +You can optionally install some of the extra Python packages used in this +tutorial. .. code-block:: bash # Mac and Linux - $ $VENV/bin/pip install nose webtest deform sqlalchemy \ - pyramid_chameleon pyramid_debugtoolbar waitress \ - pyramid_tm zope.sqlalchemy + $ $VENV/bin/pip install webtest pytest pytest-cov deform sqlalchemy \ + pyramid_chameleon pyramid_debugtoolbar pyramid_jinja2 waitress \ + pyramid_tm zope.sqlalchemy -.. code-block:: ps1con +.. code-block:: doscon # Windows - c:\> %VENV%\Scripts\pip install nose webtest deform sqlalchemy pyramid_chameleon pyramid_debugtoolbar waitress pyramid_tm zope.sqlalchemy - + c:\> %VENV%\Scripts\pip install webtest deform sqlalchemy pyramid_chameleon pyramid_debugtoolbar pyramid_jinja2 waitress pyramid_tm zope.sqlalchemy diff --git a/docs/quick_tutorial/routing.rst b/docs/quick_tutorial/routing.rst index 7b6d0904d..27c8c2c22 100644 --- a/docs/quick_tutorial/routing.rst +++ b/docs/quick_tutorial/routing.rst @@ -4,22 +4,23 @@ 11: Dispatching URLs To Views With Routing ========================================== -Routing matches incoming URL patterns to view code. Pyramid's routing -has a number of useful features. +Routing matches incoming URL patterns to view code. Pyramid's routing has a +number of useful features. + Background ========== -Writing web applications usually means sophisticated URL design. We -just saw some Pyramid machinery for requests and views. Let's look at -features that help in routing. +Writing web applications usually means sophisticated URL design. We just saw +some Pyramid machinery for requests and views. Let's look at features that help +in routing. Previously we saw the basics of routing URLs to views in Pyramid. -- Your project's "setup" code registers a route name to be used when - matching part of the URL +- Your project's "setup" code registers a route name to be used when matching + part of the URL -- Elsewhere, a view is configured to be called for that route name +- Elsewhere a view is configured to be called for that route name. .. note:: @@ -33,12 +34,14 @@ Previously we saw the basics of routing URLs to views in Pyramid. <http://static.repoze.org/casts/videotags.html>`_ if you're interested in doing so. + Objectives ========== -- Define a route that extracts part of the URL into a Python dictionary +- Define a route that extracts part of the URL into a Python dictionary. + +- Use that dictionary data in a view. -- Use that dictionary data in a view Steps ===== @@ -76,7 +79,9 @@ Steps .. code-block:: bash - $ $VENV/bin/nosetests tutorial + $ $VENV/bin/$VENV/bin/py.test tutorial/tests.py -q + .. + 2 passed in 0.39 seconds #. Run your Pyramid application with: @@ -86,6 +91,7 @@ Steps #. Open http://localhost:6543/howdy/amy/smith in your browser. + Analysis ======== @@ -95,27 +101,24 @@ In ``__init__.py`` we see an important change in our route declaration: config.add_route('hello', '/howdy/{first}/{last}') -With this we tell the :term:`configurator` that our URL has -a "replacement pattern". With this, URLs such as ``/howdy/amy/smith`` -will assign ``amy`` to ``first`` and ``smith`` to ``last``. We can then -use this data in our view: +With this we tell the :term:`configurator` that our URL has a "replacement +pattern". With this, URLs such as ``/howdy/amy/smith`` will assign ``amy`` to +``first`` and ``smith`` to ``last``. We can then use this data in our view: .. code-block:: python self.request.matchdict['first'] self.request.matchdict['last'] -``request.matchdict`` contains values from the URL that match the -"replacement patterns" (the curly braces) in the route declaration. -This information can then be used anywhere in Pyramid that has access -to the request. +``request.matchdict`` contains values from the URL that match the "replacement +patterns" (the curly braces) in the route declaration. This information can +then be used anywhere in Pyramid that has access to the request. -Extra Credit +Extra credit ============ -#. What happens if you to go the URL - http://localhost:6543/howdy? Is this the result that you - expected? +#. What happens if you to go the URL http://localhost:6543/howdy? Is this the + result that you expected? -.. seealso:: `Weird Stuff You Can Do With URL - Dispatch <http://www.plope.com/weird_pyramid_urldispatch>`_ +.. seealso:: `Weird Stuff You Can Do With URL Dispatch + <http://www.plope.com/weird_pyramid_urldispatch>`_ diff --git a/docs/quick_tutorial/scaffolds.rst b/docs/quick_tutorial/scaffolds.rst index 319eb9d90..7845f2b71 100644 --- a/docs/quick_tutorial/scaffolds.rst +++ b/docs/quick_tutorial/scaffolds.rst @@ -4,29 +4,30 @@ Prelude: Quick Project Startup with Scaffolds ============================================= -To ease the process of getting started, Pyramid provides *scaffolds* -that generate sample projects from templates in Pyramid and Pyramid -add-ons. +To ease the process of getting started, Pyramid provides *scaffolds* that +generate sample projects from templates in Pyramid and Pyramid add-ons. + Background ========== -We're going to cover a lot in this tutorial, focusing on one topic at a -time and writing everything from scratch. As a warm up, though, -it sure would be nice to see some pixels on a screen. +We're going to cover a lot in this tutorial, focusing on one topic at a time +and writing everything from scratch. As a warm up, though, it sure would be +nice to see some pixels on a screen. + +Like other web development frameworks, Pyramid provides a number of "scaffolds" +that generate working Python, template, and CSS code for sample applications. +In this step we'll use a built-in scaffold to let us preview a Pyramid +application, before starting from scratch on Step 1. -Like other web development frameworks, Pyramid provides a number of -"scaffolds" that generate working Python, template, and CSS code for -sample applications. In this step we'll use a built-in scaffold to let -us preview a Pyramid application, before starting from scratch on Step 1. Objectives ========== -- Use Pyramid's ``pcreate`` command to list scaffolds and make a new - project +- Use Pyramid's ``pcreate`` command to list scaffolds and make a new project. + +- Start up a Pyramid application and visit it in a web browser. -- Start up a Pyramid application and visit it in a web browser Steps ===== @@ -55,8 +56,8 @@ Steps $ cd scaffolds $ $VENV/bin/pip install -e . -#. Start up the application by pointing Pyramid's ``pserve`` command at - the project's (generated) configuration file: +#. Start up the application by pointing Pyramid's ``pserve`` command at the + project's (generated) configuration file: .. code-block:: bash @@ -75,13 +76,12 @@ Steps Analysis ======== -Rather than starting from scratch, ``pcreate`` can make getting a -Python project containing a Pyramid application a quick matter. -Pyramid ships with a few scaffolds. But installing a Pyramid add-on can -give you new scaffolds from that add-on. +Rather than starting from scratch, ``pcreate`` can make getting a Python +project containing a Pyramid application a quick matter. Pyramid ships with a +few scaffolds. But installing a Pyramid add-on can give you new scaffolds from +that add-on. -``pserve`` is Pyramid's application runner, separating operational -details from your code. When you install Pyramid, a small command -program called ``pserve`` is written to your ``bin`` directory. This -program is an executable Python module. It is passed a configuration -file (in this case, ``development.ini``.) +``pserve`` is Pyramid's application runner, separating operational details from +your code. When you install Pyramid, a small command program called ``pserve`` +is written to your ``bin`` directory. This program is an executable Python +module. It is passed a configuration file (in this case, ``development.ini``). diff --git a/docs/quick_tutorial/sessions.rst b/docs/quick_tutorial/sessions.rst index 06176f2b6..df4887a4b 100644 --- a/docs/quick_tutorial/sessions.rst +++ b/docs/quick_tutorial/sessions.rst @@ -6,25 +6,28 @@ Store and retrieve non-permanent data in Pyramid sessions. + Background ========== -When people use your web application, they frequently perform a task -that requires semi-permanent data to be saved. For example, a shopping -cart. This is called a :term:`session`. +When people use your web application, they frequently perform a task that +requires semi-permanent data to be saved. For example, a shopping cart. This is +called a :term:`session`. Pyramid has basic built-in support for sessions. Third party packages such as -``pyramid_redis_sessions`` provide richer session support. Or you can create -your own custom sessioning engine. Let's take a look at the -:doc:`built-in sessioning support <../narr/sessions>`. +`pyramid_redis_sessions +<https://github.com/ericrasmussen/pyramid_redis_sessions>`_ provide richer +session support. Or you can create your own custom sessioning engine. Let's +take a look at the :doc:`built-in sessioning support <../narr/sessions>`. + Objectives ========== -- Make a session factory using a built-in, simple Pyramid sessioning - system +- Make a session factory using a built-in, simple Pyramid sessioning system. + +- Change our code to use a session. -- Change our code to use a session Steps ===== @@ -36,14 +39,13 @@ Steps $ cd ..; cp -r view_classes sessions; cd sessions $ $VENV/bin/pip install -e . -#. Our ``sessions/tutorial/__init__.py`` needs a choice of session - factory to get registered with the :term:`configurator`: +#. Our ``sessions/tutorial/__init__.py`` needs a choice of session factory to + get registered with the :term:`configurator`: .. literalinclude:: sessions/tutorial/__init__.py :linenos: -#. Our views in ``sessions/tutorial/views.py`` can now use - ``request.session``: +#. Our views in ``sessions/tutorial/views.py`` can now use ``request.session``: .. literalinclude:: sessions/tutorial/views.py :linenos: @@ -58,7 +60,9 @@ Steps .. code-block:: bash - $ $VENV/bin/nosetests tutorial + $ $VENV/bin/py.test tutorial/tests.py -q + .... + 4 passed in 0.42 seconds #. Run your Pyramid application with: @@ -66,33 +70,33 @@ Steps $ $VENV/bin/pserve development.ini --reload -#. Open http://localhost:6543/ and http://localhost:6543/howdy - in your browser. As you reload and switch between those URLs, note - that the counter increases and is *not* specific to the URL. +#. Open http://localhost:6543/ and http://localhost:6543/howdy in your browser. + As you reload and switch between those URLs, note that the counter increases + and is *not* specific to the URL. + +#. Restart the application and revisit the page. Note that counter still + increases from where it left off. -#. Restart the application and revisit the page. Note that counter - still increases from where it left off. Analysis ======== -Pyramid's :term:`request` object now has a ``session`` attribute -that we can use in our view code. It acts like a dictionary. +Pyramid's :term:`request` object now has a ``session`` attribute that we can +use in our view code. It acts like a dictionary. -Since all the views are using the same counter, we made the counter a -Python property at the view class level. With this, each reload will -increase the counter displayed in our template. +Since all the views are using the same counter, we made the counter a Python +property at the view class level. With this, each reload will increase the +counter displayed in our template. -In web development, "flash messages" are notes for the user that need -to appear on a screen after a future web request. For example, -when you add an item using a form ``POST``, the site usually issues a -second HTTP Redirect web request to view the new item. You might want a -message to appear after that second web request saying "Your item was -added." You can't just return it in the web response for the POST, -as it will be tossed out during the second web request. +In web development, "flash messages" are notes for the user that need to appear +on a screen after a future web request. For example, when you add an item using +a form ``POST``, the site usually issues a second HTTP Redirect web request to +view the new item. You might want a message to appear after that second web +request saying "Your item was added." You can't just return it in the web +response for the POST, as it will be tossed out during the second web request. -Flash messages are a technique where messages can be stored between -requests, using sessions, then removed when they finally get displayed. +Flash messages are a technique where messages can be stored between requests, +using sessions, then removed when they finally get displayed. .. seealso:: :ref:`sessions_chapter`, diff --git a/docs/quick_tutorial/static_assets.rst b/docs/quick_tutorial/static_assets.rst index 61c5fbd50..65b34f8f9 100644 --- a/docs/quick_tutorial/static_assets.rst +++ b/docs/quick_tutorial/static_assets.rst @@ -4,16 +4,17 @@ 13: CSS/JS/Images Files With Static Assets ========================================== -Of course the Web is more than just markup. You need static assets: -CSS, JS, and images. Let's point our web app at a directory where -Pyramid will serve some static assets. +Of course the Web is more than just markup. You need static assets: CSS, JS, +and images. Let's point our web app at a directory where Pyramid will serve +some static assets. Objectives ========== -- Publish a directory of static assets at a URL +- Publish a directory of static assets at a URL. + +- Use Pyramid to help generate URLs to files in that directory. -- Use Pyramid to help generate URLs to files in that directory Steps ===== @@ -37,8 +38,7 @@ Steps .. literalinclude:: static_assets/tutorial/home.pt :language: html -#. Add a CSS file at - ``static_assets/tutorial/static/app.css``: +#. Add a CSS file at ``static_assets/tutorial/static/app.css``: .. literalinclude:: static_assets/tutorial/static/app.css :language: css @@ -47,7 +47,9 @@ Steps .. code-block:: bash - $ $VENV/bin/nosetests tutorial + $ $VENV/bin/$VENV/bin/py.test tutorial/tests.py -q + .... + 4 passed in 0.50 seconds #. Run your Pyramid application with: @@ -57,30 +59,31 @@ Steps #. Open http://localhost:6543/ in your browser and note the new font. + Analysis ======== We changed our WSGI application to map requests under -http://localhost:6543/static/ to files and directories inside a -``static`` directory inside our ``tutorial`` package. This directory -contained ``app.css``. +http://localhost:6543/static/ to files and directories inside a ``static`` +directory inside our ``tutorial`` package. This directory contained +``app.css``. -We linked to the CSS in our template. We could have hard-coded this -link to ``/static/app.css``. But what if the site is later moved under -``/somesite/static/``? Or perhaps the web developer changes the -arrangement on disk? Pyramid gives a helper that provides flexibility -on URL generation: +We linked to the CSS in our template. We could have hard-coded this link to +``/static/app.css``. But what if the site is later moved under +``/somesite/static/``? Or perhaps the web developer changes the arrangement on +disk? Pyramid gives a helper that provides flexibility on URL generation: .. code-block:: html ${request.static_url('tutorial:static/app.css')} -This matches the ``path='tutorial:static'`` in our -``config.add_static_view`` registration. By using ``request.static_url`` -to generate the full URL to the static assets, you both ensure you stay -in sync with the configuration and gain refactoring flexibility later. +This matches the ``path='tutorial:static'`` in our ``config.add_static_view`` +registration. By using ``request.static_url`` to generate the full URL to the +static assets, you both ensure you stay in sync with the configuration and gain +refactoring flexibility later. + -Extra Credit +Extra credit ============ #. There is also a ``request.static_path`` API. How does this differ from diff --git a/docs/quick_tutorial/templating.rst b/docs/quick_tutorial/templating.rst index a975d9ec2..ec6de98f8 100644 --- a/docs/quick_tutorial/templating.rst +++ b/docs/quick_tutorial/templating.rst @@ -4,50 +4,53 @@ 08: HTML Generation With Templating =================================== -Most web frameworks don't embed HTML in programming code. Instead, -they pass data into a templating system. In this step we look at the -basics of using HTML templates in Pyramid. +Most web frameworks don't embed HTML in programming code. Instead, they pass +data into a templating system. In this step we look at the basics of using HTML +templates in Pyramid. + Background ========== -Ouch. We have been making our own ``Response`` and filling the response -body with HTML. You usually won't embed an HTML string directly in -Python, but instead, will use a templating language. +Ouch. We have been making our own ``Response`` and filling the response body +with HTML. You usually won't embed an HTML string directly in Python, but +instead will use a templating language. + +Pyramid doesn't mandate a particular database system, form library, and so on. +It encourages replaceability. This applies equally to templating, which is +fortunate: developers have strong views about template languages. As of +Pyramid 1.5a2, Pyramid doesn't even bundle a template language! -Pyramid doesn't mandate a particular database system, form library, -etc. It encourages replaceability. This applies equally to templating, -which is fortunate: developers have strong views about template -languages. As of Pyramid 1.5a2, Pyramid doesn't even bundle a template -language! +It does, however, have strong ties to Jinja2, Mako, and Chameleon. In this step +we see how to add `pyramid_chameleon +<https://github.com/Pylons/pyramid_chameleon>`_ to your project, then change +your views to use templating. -It does, however, have strong ties to Jinja2, Mako, and Chameleon. In -this step we see how to add ``pyramid_chameleon`` to your project, -then change your views to use templating. Objectives ========== -- Enable the ``pyramid_chameleon`` Pyramid add-on +- Enable the ``pyramid_chameleon`` Pyramid add-on. + +- Generate HTML from template files. -- Generate HTML from template files +- Connect the templates as "renderers" for view code. -- Connect the templates as "renderers" for view code +- Change the view code to simply return data. -- Change the view code to simply return data Steps ===== -#. Let's begin by using the previous package as a starting point for a - new project: +#. Let's begin by using the previous package as a starting point for a new + project: .. code-block:: bash $ cd ..; cp -r views templating; cd templating -#. This step depends on ``pyramid_chameleon``, so add it as a dependency - in ``templating/setup.py``: +#. This step depends on ``pyramid_chameleon``, so add it as a dependency in + ``templating/setup.py``: .. literalinclude:: templating/setup.py :linenos: @@ -58,8 +61,8 @@ Steps $ $VENV/bin/pip install -e . -#. We need to connect ``pyramid_chameleon`` as a renderer by making a - call in the setup of ``templating/tutorial/__init__.py``: +#. We need to connect ``pyramid_chameleon`` as a renderer by making a call in + the setup of ``templating/tutorial/__init__.py``: .. literalinclude:: templating/tutorial/__init__.py :linenos: @@ -74,14 +77,13 @@ Steps .. literalinclude:: templating/tutorial/home.pt :language: html -#. For convenience, change ``templating/development.ini`` to reload - templates automatically with ``pyramid.reload_templates``: +#. For convenience, change ``templating/development.ini`` to reload templates + automatically with ``pyramid.reload_templates``: .. literalinclude:: templating/development.ini :language: ini -#. Our unit tests in ``templating/tutorial/tests.py`` can focus on - data: +#. Our unit tests in ``templating/tutorial/tests.py`` can focus on data: .. literalinclude:: templating/tutorial/tests.py :linenos: @@ -90,13 +92,9 @@ Steps .. code-block:: bash - - $ $VENV/bin/nosetests tutorial - . - ---------------------------------------------------------------------- - Ran 4 tests in 0.141s - - OK + $ $VENV/bin/py.test tutorial/tests.py -q + .... + 4 passed in 0.46 seconds #. Run your Pyramid application with: @@ -104,20 +102,19 @@ Steps $ $VENV/bin/pserve development.ini --reload -#. Open http://localhost:6543/ and http://localhost:6543/howdy - in your browser. +#. Open http://localhost:6543/ and http://localhost:6543/howdy in your browser. + Analysis ======== -Ahh, that looks better. We have a view that is focused on Python code. -Our ``@view_config`` decorator specifies a :term:`renderer` that points -to our template file. Our view then simply returns data which is then -supplied to our template. Note that we used the same template for both -views. +Ahh, that looks better. We have a view that is focused on Python code. Our +``@view_config`` decorator specifies a :term:`renderer` that points to our +template file. Our view then simply returns data which is then supplied to our +template. Note that we used the same template for both views. -Note the effect on testing. We can focus on having a data-oriented -contract with our view code. +Note the effect on testing. We can focus on having a data-oriented contract +with our view code. .. seealso:: :ref:`templates_chapter`, :ref:`debugging_templates`, and :ref:`available_template_system_bindings`. diff --git a/docs/quick_tutorial/tutorial_approach.rst b/docs/quick_tutorial/tutorial_approach.rst index 8298a4710..6d534fe13 100644 --- a/docs/quick_tutorial/tutorial_approach.rst +++ b/docs/quick_tutorial/tutorial_approach.rst @@ -2,44 +2,46 @@ Tutorial Approach ================= -This tutorial uses conventions to keep the introduction focused and -concise. Details, references, and deeper discussions are mentioned in -"See also" notes. +This tutorial uses conventions to keep the introduction focused and concise. +Details, references, and deeper discussions are mentioned in "See also" notes. .. seealso:: This is an example "See also" note. -This "Getting Started" tutorial is broken into independent steps, -starting with the smallest possible "single file WSGI app" example. -Each of these steps introduce a topic and a very small set of concepts -via working code. The steps each correspond to a directory in this -repo, where each step/topic/directory is a Python package. +This "Getting Started" tutorial is broken into independent steps, starting with +the smallest possible "single file WSGI app" example. Each of these steps +introduce a topic and a very small set of concepts via working code. The steps +each correspond to a directory in this repo, where each step/topic/directory is +a Python package. -To successfully run each step:: +To successfully run each step: - $ cd request_response - $ $VENV/bin/pip install -e . +.. code-block:: bash -...and repeat for each step you would like to work on. In most cases we -will start with the results of an earlier step. + $ cd request_response + $ $VENV/bin/pip install -e . -Directory Tree +...and repeat for each step you would like to work on. In most cases we will +start with the results of an earlier step. + +Directory tree ============== -As we develop our tutorial our directory tree will resemble the -structure below:: - - quicktutorial/ - request_response/ - development.ini - setup.py - tutorial/ - __init__.py - home.pt - tests.py - views.py - -Each of the first-level directories (e.g. ``request_response``) is a -*Python project* (except, as noted, the ``hello_world`` step.) The -``tutorial`` directory is a *Python package*. At the end of each step, -we copy a previous directory into a new directory to use as a starting -point. +As we develop our tutorial, our directory tree will resemble the structure +below: + +.. code-block:: text + + quick_tutorial + ├── env + └── request_response + ├── tutorial + │ ├── __init__.py + │ ├── tests.py + │ └── views.py + ├── development.ini + └── setup.py + +Each of the first-level directories (e.g., ``request_response``) is a *Python +project* (except as noted for the ``hello_world`` step). The ``tutorial`` +directory is a *Python package*. At the end of each step, we copy a previous +directory into a new directory to use as a starting point. diff --git a/docs/quick_tutorial/unit_testing.rst b/docs/quick_tutorial/unit_testing.rst index 58512d1cc..56fd2b297 100644 --- a/docs/quick_tutorial/unit_testing.rst +++ b/docs/quick_tutorial/unit_testing.rst @@ -1,55 +1,56 @@ .. _qtut_unit_testing: -=========================== -05: Unit Tests and ``nose`` -=========================== +============================= +05: Unit Tests and ``pytest`` +============================= Provide unit testing for our project's Python code. + Background ========== -As the mantra says, "Untested code is broken code." The Python -community has had a long culture of writing test scripts which ensure -that your code works correctly as you write it and maintain it in the -future. Pyramid has always had a deep commitment to testing, -with 100% test coverage from the earliest pre-releases. - -Python includes a -:ref:`unit testing framework <python:unittest-minimal-example>` in its -standard library. Over the years a number of Python projects, such as -`nose <https://pypi.python.org/pypi/nose/>`_, have extended this -framework with alternative test runners that provide more convenience -and functionality. The Pyramid developers use ``nose``, which we'll thus -use in this tutorial. - -Don't worry, this tutorial won't be pedantic about "test-driven -development" (TDD). We'll do just enough to ensure that, in each step, -we haven't majorly broken the code. As you're writing your code you -might find this more convenient than changing to your browser -constantly and clicking reload. - -We'll also leave discussion of -`coverage <https://pypi.python.org/pypi/coverage>`_ for another section. +As the mantra says, "Untested code is broken code." The Python community has +had a long culture of writing test scripts which ensure that your code works +correctly as you write it and maintain it in the future. Pyramid has always had +a deep commitment to testing, with 100% test coverage from the earliest +pre-releases. + +Python includes a :ref:`unit testing framework +<python:unittest-minimal-example>` in its standard library. Over the years a +number of Python projects, such as :ref:`pytest <pytest:features>`, have +extended this framework with alternative test runners that provide more +convenience and functionality. The Pyramid developers use ``pytest``, which +we'll use in this tutorial. + +Don't worry, this tutorial won't be pedantic about "test-driven development" +(TDD). We'll do just enough to ensure that, in each step, we haven't majorly +broken the code. As you're writing your code, you might find this more +convenient than changing to your browser constantly and clicking reload. + +We'll also leave discussion of `pytest-cov +<http://pytest-cov.readthedocs.org/en/latest/>`_ for another section. + Objectives ========== -- Write unit tests that ensure the quality of our code +- Write unit tests that ensure the quality of our code. + +- Install a Python package (``pytest``) which helps in our testing. -- Install a Python package (``nose``) which helps in our testing Steps ===== -#. First we copy the results of the previous step, as well as install - the ``nose`` package: +#. First we copy the results of the previous step, as well as install the + ``pytest`` package: .. code-block:: bash $ cd ..; cp -r debugtoolbar unit_testing; cd unit_testing $ $VENV/bin/pip install -e . - $ $VENV/bin/pip install nose + $ $VENV/bin/pip install pytest #. Now we write a simple unit test in ``unit_testing/tutorial/tests.py``: @@ -61,54 +62,51 @@ Steps .. code-block:: bash - $ $VENV/bin/nosetests tutorial + $ $VENV/bin/py.test tutorial/tests.py -q . - ---------------------------------------------------------------------- - Ran 1 test in 0.141s + 1 passed in 0.14 seconds - OK Analysis ======== -Our ``tests.py`` imports the Python standard unit testing framework. To -make writing Pyramid-oriented tests more convenient, Pyramid supplies -some ``pyramid.testing`` helpers which we use in the test setup and -teardown. Our one test imports the view, makes a dummy request, and sees -if the view returns what we expected. +Our ``tests.py`` imports the Python standard unit testing framework. To make +writing Pyramid-oriented tests more convenient, Pyramid supplies some +``pyramid.testing`` helpers which we use in the test setup and teardown. Our +one test imports the view, makes a dummy request, and sees if the view returns +what we expect. -The ``tests.TutorialViewTests.test_hello_world`` test is a small -example of a unit test. First, we import the view inside each test. Why -not import at the top, like in normal Python code? Because imports can -cause effects that break a test. We'd like our tests to be in *units*, -hence the name *unit* testing. Each test should isolate itself to the -correct degree. +The ``tests.TutorialViewTests.test_hello_world`` test is a small example of a +unit test. First, we import the view inside each test. Why not import at the +top, like in normal Python code? Because imports can cause effects that break a +test. We'd like our tests to be in *units*, hence the name *unit* testing. Each +test should isolate itself to the correct degree. -Our test then makes a fake incoming web request, then calls our Pyramid -view. We test the HTTP status code on the response to make sure it -matches our expectations. +Our test then makes a fake incoming web request, then calls our Pyramid view. +We test the HTTP status code on the response to make sure it matches our +expectations. Note that our use of ``pyramid.testing.setUp()`` and ``pyramid.testing.tearDown()`` aren't actually necessary here; they are only necessary when your test needs to make use of the ``config`` object (it's a Configurator) to add stuff to the configuration state before calling the view. + Extra Credit ============ -#. Change the test to assert that the response status code should be - ``404`` (meaning, not found.) Run ``nosetests`` again. Read the - error report and see if you can decipher what it is telling you. +#. Change the test to assert that the response status code should be ``404`` + (meaning, not found). Run ``py.test`` again. Read the error report and see + if you can decipher what it is telling you. -#. As a more realistic example, put the ``tests.py`` back as you found - it and put an error in your view, such as a reference to a - non-existing variable. Run the tests and see how this is more - convenient than reloading your browser and going back to your code. +#. As a more realistic example, put the ``tests.py`` back as you found it, and + put an error in your view, such as a reference to a non-existing variable. + Run the tests and see how this is more convenient than reloading your + browser and going back to your code. #. Finally, for the most realistic test, read about Pyramid ``Response`` - objects and see how to change the response code. Run the tests and - see how testing confirms the "contract" that your code claims to - support. + objects and see how to change the response code. Run the tests and see how + testing confirms the "contract" that your code claims to support. #. How could we add a unit test assertion to test the HTML value of the response body? diff --git a/docs/quick_tutorial/view_classes.rst b/docs/quick_tutorial/view_classes.rst index cc5337493..05d97a9b1 100644 --- a/docs/quick_tutorial/view_classes.rst +++ b/docs/quick_tutorial/view_classes.rst @@ -4,8 +4,9 @@ 09: Organizing Views With View Classes ====================================== -Change our view functions to be methods on a view class, -then move some declarations to the class level. +Change our view functions to be methods on a view class, then move some +declarations to the class level. + Background ========== @@ -15,27 +16,27 @@ views are related to one another. They may be different ways to look at or work on the same data, or be a REST API that handles multiple operations. Grouping these views together as a :ref:`view class <class_as_view>` makes sense: -- Group views +- Group views. + +- Centralize some repetitive defaults. -- Centralize some repetitive defaults +- Share some state and helpers. -- Share some state and helpers +In this step we just do the absolute minimum to convert the existing views to a +view class. In a later tutorial step, we'll examine view classes in depth. -In this step we just do the absolute minimum to convert the existing -views to a view class. In a later tutorial step we'll examine view -classes in depth. Objectives ========== -- Group related views into a view class +- Group related views into a view class. + +- Centralize configuration with class-level ``@view_defaults``. -- Centralize configuration with class-level ``@view_defaults`` Steps ===== - #. First we copy the results of the previous step: .. code-block:: bash @@ -43,15 +44,15 @@ Steps $ cd ..; cp -r templating view_classes; cd view_classes $ $VENV/bin/pip install -e . -#. Our ``view_classes/tutorial/views.py`` now has a view class with - our two views: +#. Our ``view_classes/tutorial/views.py`` now has a view class with our two + views: .. literalinclude:: view_classes/tutorial/views.py :linenos: -#. Our unit tests in ``view_classes/tutorial/tests.py`` don't run, - so let's modify them to import the view class and make an instance - before getting a response: +#. Our unit tests in ``view_classes/tutorial/tests.py`` don't run, so let's + modify them to import the view class, and make an instance before getting a + response: .. literalinclude:: view_classes/tutorial/tests.py :linenos: @@ -61,12 +62,9 @@ Steps .. code-block:: bash - $ $VENV/bin/nosetests tutorial - . - ---------------------------------------------------------------------- - Ran 4 tests in 0.141s - - OK + $ $VENV/bin/py.test tutorial/tests.py -q + .... + 4 passed in 0.34 seconds #. Run your Pyramid application with: @@ -74,24 +72,23 @@ Steps $ $VENV/bin/pserve development.ini --reload -#. Open http://localhost:6543/ and http://localhost:6543/howdy - in your browser. +#. Open http://localhost:6543/ and http://localhost:6543/howdy in your browser. + Analysis ======== To ease the transition to view classes, we didn't introduce any new -functionality. We simply changed the view functions to methods on a -view class, then updated the tests. - -In our ``TutorialViews`` view class you can see that our two view -classes are logically grouped together as methods on a common class. -Since the two views shared the same template, we could move that to a -``@view_defaults`` decorator at the class level. - -The tests needed to change. Obviously we needed to import the view -class. But you can also see the pattern in the tests of instantiating -the view class with the dummy request first, then calling the view -method being tested. +functionality. We simply changed the view functions to methods on a view class, +then updated the tests. + +In our ``TutorialViews`` view class, you can see that our two view classes are +logically grouped together as methods on a common class. Since the two views +shared the same template, we could move that to a ``@view_defaults`` decorator +at the class level. + +The tests needed to change. Obviously we needed to import the view class. But +you can also see the pattern in the tests of instantiating the view class with +the dummy request first, then calling the view method being tested. .. seealso:: :ref:`class_as_view` diff --git a/docs/quick_tutorial/views.rst b/docs/quick_tutorial/views.rst index 5b6e2960b..edbe4b2ff 100644 --- a/docs/quick_tutorial/views.rst +++ b/docs/quick_tutorial/views.rst @@ -6,12 +6,12 @@ Organize a views module with decorators and multiple views. + Background ========== -For the examples so far, the ``hello_world`` function is a "view". In -Pyramid, views are the primary way to accept web requests and return -responses. +For the examples so far, the ``hello_world`` function is a "view". In Pyramid, +views are the primary way to accept web requests and return responses. So far our examples place everything in one file: @@ -23,22 +23,24 @@ So far our examples place everything in one file: - The WSGI application launcher -Let's move the views out to their own ``views.py`` module and change -our startup code to scan that module, looking for decorators that setup -the views. Let's also add a second view and update our tests. +Let's move the views out to their own ``views.py`` module and change our +startup code to scan that module, looking for decorators that set up the views. +Let's also add a second view and update our tests. + Objectives ========== -- Views in a module that is scanned by the configurator +- Move views into a module that is scanned by the configurator. + +- Create decorators that do declarative configuration. -- Decorators that do declarative configuration Steps ===== -#. Let's begin by using the previous package as a starting point for a - new distribution, then making it active: +#. Let's begin by using the previous package as a starting point for a new + distribution, then making it active: .. code-block:: bash @@ -66,12 +68,9 @@ Steps .. code-block:: bash - $ $VENV/bin/nosetests tutorial - . - ---------------------------------------------------------------------- - Ran 4 tests in 0.141s - - OK + $ $VENV/bin/py.test tutorial/tests.py -q + .... + 4 passed in 0.28 seconds #. Run your Pyramid application with: @@ -82,41 +81,41 @@ Steps #. Open http://localhost:6543/ and http://localhost:6543/howdy in your browser. + Analysis ======== -We added some more URLs, but we also removed the view code from the -application startup code in ``tutorial/__init__.py``. -Our views, and their view registrations (via decorators) are now in a -module ``views.py`` which is scanned via ``config.scan('.views')``. - -We have 2 views, each leading to the other. If you start at -http://localhost:6543/, you get a response with a link to the next -view. The ``hello`` view (available at the URL ``/howdy``) has a link -back to the first view. - -This step also shows that the name appearing in the URL, -the name of the "route" that maps a URL to a view, -and the name of the view, can all be different. More on routes later. - -Earlier we saw ``config.add_view`` as one way to configure a view. This -section introduces ``@view_config``. Pyramid's configuration supports -:term:`imperative configuration`, such as the -``config.add_view`` in the previous example. You can also use -:term:`declarative configuration`, in which a Python -:term:`python:decorator` -is placed on the line above the view. Both approaches result in the -same final configuration, thus usually, it is simply a matter of taste. - -Extra Credit +We added some more URLs, but we also removed the view code from the application +startup code in ``tutorial/__init__.py``. Our views, and their view +registrations (via decorators) are now in a module ``views.py``, which is +scanned via ``config.scan('.views')``. + +We have two views, each leading to the other. If you start at +http://localhost:6543/, you get a response with a link to the next view. The +``hello`` view (available at the URL ``/howdy``) has a link back to the first +view. + +This step also shows that the name appearing in the URL, the name of the +"route" that maps a URL to a view, and the name of the view, can all be +different. More on routes later. + +Earlier we saw ``config.add_view`` as one way to configure a view. This section +introduces ``@view_config``. Pyramid's configuration supports :term:`imperative +configuration`, such as the ``config.add_view`` in the previous example. You +can also use :term:`declarative configuration`, in which a Python +:term:`python:decorator` is placed on the line above the view. Both approaches +result in the same final configuration, thus usually, it is simply a matter of +taste. + + +Extra credit ============ #. What does the dot in ``.views`` signify? -#. Why might ``assertIn`` be a better choice in testing the text in - responses than ``assertEqual``? +#. Why might ``assertIn`` be a better choice in testing the text in responses + than ``assertEqual``? .. seealso:: :ref:`views_chapter`, :ref:`view_config_chapter`, and :ref:`debugging_view_configuration` - diff --git a/docs/whatsnew-1.7.rst b/docs/whatsnew-1.7.rst index d202a4140..fd144a24a 100644 --- a/docs/whatsnew-1.7.rst +++ b/docs/whatsnew-1.7.rst @@ -15,8 +15,9 @@ Backwards Incompatibilities ``md5`` to ``sha512``. If you are using the authentication policy and need to continue using ``md5``, please explicitly set ``hashalg='md5'``. - This change means that any existing auth tickets (and associated cookies) - will no longer be valid, users will be logged out, and have to login to their + If you are not currently specifying the ``hashalg`` option in your apps, then + this change means any existing auth tickets (and associated cookies) will no + longer be valid, users will be logged out, and have to login to their accounts again. This change has been issuing a DeprecationWarning since :app:`Pyramid` 1.4. @@ -27,6 +28,10 @@ Backwards Incompatibilities https://github.com/Pylons/pyramid/issues/2368 and https://github.com/Pylons/pyramid/pull/2256 +- The :func:`pyramid.session.check_csrf_token` function no longer validates a + csrf token in the query string of a request. Only headers and request bodies + are supported. See https://github.com/Pylons/pyramid/pull/2500 + Feature Additions ----------------- @@ -38,21 +43,38 @@ Feature Additions to security checks. See https://github.com/Pylons/pyramid/pull/2021 - Added a new setting, ``pyramid.require_default_csrf`` which may be used - to turn on CSRF checks globally for every POST request in the application. + to turn on CSRF checks globally for every request in the application. This should be considered a good default for websites built on Pyramid. It is possible to opt-out of CSRF checks on a per-view basis by setting ``require_csrf=False`` on those views. See :ref:`auto_csrf_checking` and https://github.com/Pylons/pyramid/pull/2413 -- Added a ``require_csrf`` view option which will enforce CSRF checks on POST - requests. If the CSRF check fails a ``BadCSRFToken`` exception will be - raised and may be caught by exception views (the default response is a - ``400 Bad Request``). This option should be used in place of the deprecated - ``check_csrf`` view predicate which would normally result in unexpected - ``404 Not Found`` response to the client instead of a catchable exception. - See :ref:`auto_csrf_checking` and - https://github.com/Pylons/pyramid/pull/2413 +- Added a ``require_csrf`` view option which will enforce CSRF checks on + requests with an unsafe method as defined by RFC2616. If the CSRF check fails + a ``BadCSRFToken`` exception will be raised and may be caught by exception + views (the default response is a ``400 Bad Request``). This option should be + used in place of the deprecated ``check_csrf`` view predicate which would + normally result in unexpected ``404 Not Found`` response to the client + instead of a catchable exception. See :ref:`auto_csrf_checking`, + https://github.com/Pylons/pyramid/pull/2413 and + https://github.com/Pylons/pyramid/pull/2500 + +- Added an additional CSRF validation that checks the origin/referrer of a + request and makes sure it matches the current ``request.domain``. This + particular check is only active when accessing a site over HTTPS as otherwise + browsers don't always send the required information. If this additional CSRF + validation fails a ``BadCSRFOrigin`` exception will be raised and may be + caught by exception views (the default response is ``400 Bad Request``). + Additional allowed origins may be configured by setting + ``pyramid.csrf_trusted_origins`` to a list of domain names (with ports if on + a non standard port) to allow. Subdomains are not allowed unless the domain + name has been prefixed with a ``.``. See + https://github.com/Pylons/pyramid/pull/2501 + +- Added a new :func:`pyramid.session.check_csrf_origin` API for validating the + origin or referrer headers against the request's domain. + See https://github.com/Pylons/pyramid/pull/2501 - Subclasses of :class:`pyramid.httpexceptions.HTTPException` will now take into account the best match for the clients ``Accept`` header, and depending @@ -64,7 +86,8 @@ Feature Additions - A new event, :class:`pyramid.events.BeforeTraversal`, and interface :class:`pyramid.interfaces.IBeforeTraversal` have been introduced that will notify listeners before traversal starts in the router. - See https://github.com/Pylons/pyramid/pull/2469 and + See :ref:`router_chapter` as well as + https://github.com/Pylons/pyramid/pull/2469 and https://github.com/Pylons/pyramid/pull/1876 - A new method, :meth:`pyramid.request.Request.invoke_exception_view`, which @@ -106,6 +129,7 @@ Scaffolding Enhancements practices with regards to SQLAlchemy session management, as well as a more modular approach to configuration, separating routes into a separate module to illustrate uses of :meth:`pyramid.config.Configurator.include`. + See https://github.com/Pylons/pyramid/pull/2024 Documentation Enhancements -------------------------- |
