Removed docs that assume developer might be using Python < 2.4

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12400 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Luke Plant 2010-02-09 19:37:08 +00:00
parent 4bff194633
commit eaee55e547
3 changed files with 14 additions and 52 deletions

View File

@ -138,8 +138,7 @@ The ``Library.filter()`` method takes two arguments:
2. The compilation function -- a Python function (not the name of the
function as a string).
If you're using Python 2.4 or above, you can use ``register.filter()`` as a
decorator instead::
You can use ``register.filter()`` as a decorator instead::
@register.filter(name='cut')
@stringfilter
@ -557,8 +556,7 @@ The ``tag()`` method takes two arguments:
2. The compilation function -- a Python function (not the name of the
function as a string).
As with filter registration, it is also possible to use this as a decorator, in
Python 2.4 and above::
As with filter registration, it is also possible to use this as a decorator::
@register.tag(name="current_time")
def do_current_time(parser, token):
@ -657,7 +655,7 @@ Our earlier ``current_time`` function could thus be written like this::
register.simple_tag(current_time)
In Python 2.4, the decorator syntax also works::
The decorator syntax also works::
@register.simple_tag
def current_time(format_string):
@ -738,8 +736,7 @@ loader, we'd register the tag like this::
# Here, register is a django.template.Library instance, as before
register.inclusion_tag('results.html')(show_results)
As always, Python 2.4 decorator syntax works as well, so we could have
written::
As always, decorator syntax works as well, so we could have written::
@register.inclusion_tag('results.html')
def show_results(poll):

View File

@ -696,36 +696,19 @@ The login_required decorator
from django.contrib.auth.decorators import login_required
def my_view(request):
# ...
my_view = login_required(my_view)
Here's an equivalent example, using the more compact decorator syntax
introduced in Python 2.4::
from django.contrib.auth.decorators import login_required
@login_required
def my_view(request):
# ...
...
:func:`~django.contrib.auth.decorators.login_required` also takes an
optional ``redirect_field_name`` parameter. Example::
from django.contrib.auth.decorators import login_required
def my_view(request):
# ...
my_view = login_required(redirect_field_name='redirect_to')(my_view)
Again, an equivalent example of the more compact decorator syntax
introduced in Python 2.4::
from django.contrib.auth.decorators import login_required
@login_required(redirect_field_name='redirect_to')
def my_view(request):
# ...
...
:func:`~django.contrib.auth.decorators.login_required` does the following:
@ -1058,23 +1041,15 @@ checks to make sure the user is logged in and has the permission
from django.contrib.auth.decorators import user_passes_test
@user_passes_test(lambda u: u.has_perm('polls.can_vote'))
def my_view(request):
# ...
my_view = user_passes_test(lambda u: u.has_perm('polls.can_vote'))(my_view)
...
We're using this particular test as a relatively simple example. However,
if you just want to test whether a permission is available to a user, you
can use the :func:`~django.contrib.auth.decorators.permission_required()`
decorator, described later in this document.
Here's the same thing, using Python 2.4's decorator syntax::
from django.contrib.auth.decorators import user_passes_test
@user_passes_test(lambda u: u.has_perm('polls.can_vote'))
def my_view(request):
# ...
:func:`~django.contrib.auth.decorators.user_passes_test` takes a required
argument: a callable that takes a
:class:`~django.contrib.auth.models.User` object and returns ``True`` if
@ -1093,7 +1068,7 @@ checks to make sure the user is logged in and has the permission
@user_passes_test(lambda u: u.has_perm('polls.can_vote'), login_url='/login/')
def my_view(request):
# ...
...
The permission_required decorator
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@ -1107,9 +1082,9 @@ The permission_required decorator
from django.contrib.auth.decorators import permission_required
permission_required('polls.can_vote')
def my_view(request):
# ...
my_view = permission_required('polls.can_vote')(my_view)
...
As for the :meth:`User.has_perm` method, permission names take the form
``"<app label>.<permission codename>"`` (i.e. ``polls.can_vote`` for a
@ -1120,9 +1095,9 @@ The permission_required decorator
from django.contrib.auth.decorators import permission_required
permission_required('polls.can_vote', login_url='/loginpage/')
def my_view(request):
# ...
my_view = permission_required('polls.can_vote', login_url='/loginpage/')(my_view)
...
As in the :func:`~decorators.login_required` decorator, ``login_url``
defaults to :setting:`settings.LOGIN_URL <LOGIN_URL>`.

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@ -332,13 +332,6 @@ to use::
from django.views.decorators.cache import cache_page
def my_view(request):
...
my_view = cache_page(my_view, 60 * 15)
Or, using Python 2.4's decorator syntax::
@cache_page(60 * 15)
def my_view(request):
...
@ -365,12 +358,9 @@ requested, subsequent requests to that URL will use the cache.
works in the same way as the ``CACHE_MIDDLEWARE_KEY_PREFIX`` setting for the
middleware. It can be used like this::
my_view = cache_page(my_view, 60 * 15, key_prefix="site1")
Or, using Python 2.4's decorator syntax::
@cache_page(60 * 15, key_prefix="site1")
def my_view(request):
...
Specifying per-view cache in the URLconf
----------------------------------------