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Diffstat (limited to 'docs/tutorials/wiki2/basiclayout.rst')
| -rw-r--r-- | docs/tutorials/wiki2/basiclayout.rst | 52 |
1 files changed, 32 insertions, 20 deletions
diff --git a/docs/tutorials/wiki2/basiclayout.rst b/docs/tutorials/wiki2/basiclayout.rst index 68be4ee7c..05781c044 100644 --- a/docs/tutorials/wiki2/basiclayout.rst +++ b/docs/tutorials/wiki2/basiclayout.rst @@ -43,9 +43,9 @@ above is executed. It accepts some settings and returns a :term:`WSGI` application. (See :ref:`startup_chapter` for more about ``pserve``.) The main function first creates a :term:`SQLAlchemy` database engine using -``engine_from_config`` from the ``sqlalchemy.`` prefixed settings in the -``development.ini`` file's ``[app:main]`` section. This will be a URI -(something like ``sqlite://``): +:func:`sqlalchemy.engine_from_config` from the ``sqlalchemy.`` prefixed +settings in the ``development.ini`` file's ``[app:main]`` section. +This will be a URI (something like ``sqlite://``): .. literalinclude:: src/basiclayout/tutorial/__init__.py :lines: 13 @@ -82,11 +82,18 @@ dictionary of settings parsed from the ``.ini`` file, which contains deployment-related values such as ``pyramid.reload_templates``, ``db_string``, etc. +Next, include :term:`Chameleon` templating bindings so that we can use +renderers with the ``.pt`` extension within our project. + + .. literalinclude:: src/basiclayout/tutorial/__init__.py + :lines: 17 + :language: py + ``main`` now calls :meth:`pyramid.config.Configurator.add_static_view` with two arguments: ``static`` (the name), and ``static`` (the path): .. literalinclude:: src/basiclayout/tutorial/__init__.py - :lines: 17 + :lines: 18 :language: py This registers a static resource view which will match any URL that starts @@ -104,7 +111,7 @@ via the :meth:`pyramid.config.Configurator.add_route` method that will be used when the URL is ``/``: .. literalinclude:: src/basiclayout/tutorial/__init__.py - :lines: 18 + :lines: 19 :language: py Since this route has a ``pattern`` equalling ``/`` it is the route that will @@ -118,7 +125,7 @@ view configuration will be registered, which will allow one of our application URLs to be mapped to some code. .. literalinclude:: src/basiclayout/tutorial/__init__.py - :lines: 19 + :lines: 20 :language: py Finally, ``main`` is finished configuring things, so it uses the @@ -126,17 +133,16 @@ Finally, ``main`` is finished configuring things, so it uses the :term:`WSGI` application: .. literalinclude:: src/basiclayout/tutorial/__init__.py - :lines: 20 + :lines: 21 :language: py View Declarations via ``views.py`` ---------------------------------- -Mapping a :term:`route` to code that will be executed when a match for -the route's pattern occurs is done by registering a :term:`view -configuration`. Our application uses the -:meth:`pyramid.view.view_config` decorator to map view callables to -each route, thereby mapping URL patterns to code. +The main function of a web framework is mapping each URL pattern to code (a +:term:`view callable`) that is executed when the requested URL matches the +corresponding :term:`route`. Our application uses the +:meth:`pyramid.view.view_config` decorator to perform this mapping. Open ``tutorial/tutorial/views.py``. It should already contain the following: @@ -226,13 +232,19 @@ To give a simple example of a model class, we define one named ``MyModel``: :linenos: :language: py -Our example model has an ``__init__`` method that takes a two arguments -(``name``, and ``value``). It stores these values as ``self.name`` and -``self.value`` -within the ``__init__`` function itself. The ``MyModel`` class also has a -``__tablename__`` attribute. This informs SQLAlchemy which table to use to -store the data representing instances of this class. +Our example model does not require an ``__init__`` method because SQLAlchemy +supplies for us a default constructor if one is not already present, +which accepts keyword arguments of the same name as that of the mapped attributes. + +.. note:: Example usage of MyModel: + + .. code-block:: python + + johnny = MyModel(name="John Doe", value=10) -That's about all there is to it to models, views, and initialization code in -our stock application. +The ``MyModel`` class has a ``__tablename__`` attribute. This informs +SQLAlchemy which table to use to store the data representing instances of this +class. +That's about all there is to it regarding models, views, and initialization +code in our stock application. |