Refs #23276 -- Added missing url() in some places.

    * Use the ``page`` parameter in the URLconf. For example, this is what

      your URLconf might look like::

        (r'^objects/page(?P<page>[0-9]+)/$', PaginatedView.as_view())

        url(r'^objects/page(?P<page>[0-9]+)/$', PaginatedView.as_view()),

    * Pass the page number via the ``page`` query-string parameter. For

      example, a URL would look like this::

    Notice the wrapped view in the fifth line above::

        (r'^my_view/$', self.admin_site.admin_view(self.my_view))

        url(r'^my_view/$', self.admin_site.admin_view(self.my_view))

    This wrapping will protect ``self.my_view`` from unauthorized access and

    will apply the ``django.views.decorators.cache.never_cache`` decorator to

    performed, you can pass a ``cacheable=True`` argument to

    ``AdminSite.admin_view()``::

        (r'^my_view/$', self.admin_site.admin_view(self.my_view, cacheable=True))

        url(r'^my_view/$', self.admin_site.admin_view(self.my_view, cacheable=True))

.. method:: ModelAdmin.get_form(request, obj=None, **kwargs)

   ...and add the following line to the appropriate model in your URLconf::

       (r'^post/$', SomeModelFormPreview(SomeModelForm)),

       url(r'^post/$', SomeModelFormPreview(SomeModelForm)),

   where ``SomeModelForm`` is a Form or ModelForm class for the model.

These can be matched with a :doc:`URLconf </topics/http/urls>` line such as::

    (r'^beats/(?P<beat_id>[0-9]+)/rss/$', BeatFeed()),

    url(r'^beats/(?P<beat_id>[0-9]+)/rss/$', BeatFeed()),

Like a view, the arguments in the URL are passed to the ``get_object()``

method along with the request object.

    Note that if you don't specify the ``login_url`` parameter, you'll need to

    ensure that the :setting:`settings.LOGIN_URL <LOGIN_URL>` and your login

    view are properly associated. For example, using the defaults, add the

    following line to your URLconf::

    following lines to your URLconf::

        (r'^accounts/login/$', 'django.contrib.auth.views.login'),

        from django.contrib.auth import views as auth_views

        url(r'^accounts/login/$', auth_views.login),

    The :setting:`settings.LOGIN_URL <LOGIN_URL>` also accepts view function

    names and :ref:`named URL patterns <naming-url-patterns>`. This allows you

    the view in your URLconf. For example, this URLconf line would use

    :file:`myapp/login.html` instead::

        (r'^accounts/login/$', 'django.contrib.auth.views.login', {'template_name': 'myapp/login.html'}),

        url(r'^accounts/login/$', auth_views.login, {'template_name': 'myapp/login.html'}),

    You can also specify the name of the ``GET`` field which contains the URL

    to redirect to after login by passing ``redirect_field_name`` to the view.