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Diffstat (limited to 'docs/tutorials/wiki2/definingviews.rst')
| -rw-r--r-- | docs/tutorials/wiki2/definingviews.rst | 42 |
1 files changed, 19 insertions, 23 deletions
diff --git a/docs/tutorials/wiki2/definingviews.rst b/docs/tutorials/wiki2/definingviews.rst index f2ac2f85f..a1e2313f3 100644 --- a/docs/tutorials/wiki2/definingviews.rst +++ b/docs/tutorials/wiki2/definingviews.rst @@ -6,16 +6,13 @@ A :term:`view callable` in a :app:`Pyramid` application is typically a simple Python function that accepts a single parameter named :term:`request`. A view callable is assumed to return a :term:`response` object. -The request object passed to every view that is called as the result of a -route match has an attribute named ``matchdict`` that contains the elements -placed into the URL by the ``pattern`` of a ``route`` statement. For -instance, if a call to :meth:`pyramid.config.Configurator.add_route` in -``__init__.py`` had the pattern ``{one}/{two}``, and the URL at -``http://example.com/foo/bar`` was invoked, matching this pattern, the -``matchdict`` dictionary attached to the request passed to the view would -have a ``'one'`` key with the value ``'foo'`` and a ``'two'`` key with the -value ``'bar'``. - +The request object has a dictionary as an attribute named ``matchdict``. A +``matchdict`` maps the placeholders in the matching URL ``pattern`` to the +substrings of the path in the :term:`request` URL. For instance, if a call to +:meth:`pyramid.config.Configurator.add_route` has the pattern ``/{one}/{two}``, +and a user visits ``http://example.com/foo/bar``, our pattern would be matched +against ``/foo/bar`` and the ``matchdict`` would look like: ``{'one':'foo', +'two':'bar'}`` Declaring Dependencies in Our ``setup.py`` File =============================================== @@ -148,14 +145,13 @@ As a result, the ``content`` variable is now a fully formed bit of HTML containing various view and add links for WikiWords based on the content of our current page object. -We then generate an edit URL (because it's easier to do here than in the -template), and we return a dictionary with a number of arguments. The fact -that ``view_page()`` returns a dictionary (as opposed to a :term:`response` -object) is a cue to :app:`Pyramid` that it should try to use a :term:`renderer` -associated with the view configuration to render a template. In our case, -the template which will be rendered will be the ``templates/view.pt`` -template, as indicated in the ``@view_config`` decorator that is applied to -``view_page()``. +We then generate an edit URL because it's easier to do here than in the +template, and we return a dictionary with a number of arguments. The fact that +``view_page()`` returns a dictionary (as opposed to a :term:`response` object) +is a cue to :app:`Pyramid` that it should try to use a :term:`renderer` +associated with the view configuration to render a response. In our case, the +renderer used will be the ``templates/view.pt`` template, as indicated in the +``@view_config`` decorator that is applied to ``view_page()``. The ``add_page`` view function ------------------------------ @@ -350,20 +346,20 @@ We can finally examine our application in a browser (See :ref:`wiki2-start-the-application`). Launch a browser and visit each of the following URLs, check that the result is as expected: -- ``http://localhost:6543`` in a browser invokes the +- http://localhost:6543 in a browser invokes the ``view_wiki`` view. This always redirects to the ``view_page`` view of the FrontPage page object. -- ``http://localhost:6543/FrontPage`` in a browser invokes +- http://localhost:6543/FrontPage in a browser invokes the ``view_page`` view of the front page object. -- ``http://localhost:6543/FrontPage/edit_page`` in a browser +- http://localhost:6543/FrontPage/edit_page in a browser invokes the edit view for the front page object. -- ``http://localhost:6543/add_page/SomePageName`` in a +- http://localhost:6543/add_page/SomePageName in a browser invokes the add view for a page. -- To generate an error, visit ``http://localhost:6543/foobars/edit_page`` which +- To generate an error, visit http://localhost:6543/foobars/edit_page which will generate a ``NoResultFound: No row was found for one()`` error. You'll see an interactive traceback facility provided by :term:`pyramid_debugtoolbar`. |