Fixed #10194: added django.shortcuts.redirect, a do-what-I-mean redirect shortcut. See the docs at topics/http/shortcuts for details.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10108 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Jacob Kaplan-Moss 2009-03-21 13:09:13 +00:00
parent 4eadcf45d4
commit d7e8127524
3 changed files with 160 additions and 15 deletions

View file

@ -4,16 +4,23 @@
Django shortcut functions
=========================
.. module:: django.shortcuts
:synopsis:
Convience shortcuts that spam multiple levels of Django's MVC stack.
.. index:: shortcuts
The package ``django.shortcuts`` collects helper functions and classes that
"span" multiple levels of MVC. In other words, these functions/classes
introduce controlled coupling for convenience's sake.
``render_to_response()``
========================
``render_to_response``
======================
``django.shortcuts.render_to_response`` renders a given template with a given
context dictionary and returns an ``HttpResponse`` object with that rendered
text.
.. function:: render_to_response(template[, dictionary][, context_instance][, mimetype])
Renders a given template with a given context dictionary and returns an
:class:`~django.http.HttpResponse` object with that rendered text.
Required arguments
------------------
@ -42,9 +49,8 @@ Optional arguments
context_instance=RequestContext(request))
``mimetype``
.. versionadded:: 1.0
.. versionadded:: 1.0
The MIME type to use for the resulting document. Defaults to the value of
the :setting:`DEFAULT_CONTENT_TYPE` setting.
@ -73,12 +79,77 @@ This example is equivalent to::
r = HttpResponse(t.render(c),
mimetype="application/xhtml+xml")
``redirect``
============
.. function:: redirect(to[, permanent=False], *args, **kwargs)
Returns an HttpResponseRedirect to the apropriate URL for the arguments
passed.
The arguments could be:
* A model: the model's `get_absolute_url()` function will be called.
* A view name, possibly with arguments: `urlresolvers.reverse()` will
be used to reverse-resolve the name.
* A URL, which will be used as-is for the redirect location.
By default issues a temporary redirect; pass permanent=True to issue a
permanent redirect
Examples
--------
You can use the :func:`redirect` function in a number of ways.
1. By passing some object; that object's
:meth:`~django.db.models.Model.get_absolute_url` method will be called
to figure out the redirect URL::
def my_view(request):
...
object = MyModel.objects.get(...)
return redirect(object)
2. By passing the name of a view and optionally some positional or
keyword arguments; the URL will be reverse resolved using the
:func:`~django.core.urlresolvers.reverse` method::
def my_view(request):
...
return redirect('some-view-name', foo='bar')
3. By passing a hardcoded URL to redirect to::
def my_view(request):
...
return redirect('/some/url/')
This also works with full URLs::
def my_view(request):
...
return redirect('http://example.com/')
By default, :func:`redirect` returns a temporary redirect. All of the above
forms accept a ``permanent`` argument; if set to ``True`` a permanent redirect
will be returned::
def my_view(request):
...
object = MyModel.objects.get(...)
return redirect(object, permanent=True)
``get_object_or_404``
=====================
``django.shortcuts.get_object_or_404`` calls
:meth:`~django.db.models.QuerySet.get()` on a given model manager, but it raises
``django.http.Http404`` instead of the model's ``DoesNotExist`` exception.
.. function:: get_object_or_404(object, *args, **kwargs)
Calls :meth:`~django.db.models.QuerySet.get()` on a given model manager,
but it raises ``django.http.Http404`` instead of the model's
``DoesNotExist`` exception.
Required arguments
------------------
@ -118,9 +189,11 @@ raised if more than one object is found.
``get_list_or_404``
===================
``django.shortcuts.get_list_or_404`` returns the result of
:meth:`~django.db.models.QuerySet.filter()` on a given model manager, raising
``django.http.Http404`` if the resulting list is empty.
.. function:: get_list_or_404(klass, *args, **kwargs)
Returns the result of :meth:`~django.db.models.QuerySet.filter()` on a
given model manager, raising ``django.http.Http404`` if the resulting list
is empty.
Required arguments
------------------