test0908
/
django
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Refs #19705 -- Documented decorator ordering with @condition().

This commit is contained in:
Kevin Christopher Henry 2016-10-13 19:52:18 -04:00 committed by Tim Graham
parent 4cfccc713a
commit 9eb49af821
1 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
docs/topics/conditional-view-processing.txt
View File

@ -105,6 +105,18 @@ for your front page view::
def front_page(request, blog_id): def front_page(request, blog_id):
... ...
.. admonition:: Be careful with the order of decorators
When ``condition()`` returns a conditional response, any decorators below
it will be skipped and won't apply to the response. Therefore, any
decorators that need to apply to both the regular view response and a
conditional response must be above ``condition()``. In particular,
:func:`~django.views.decorators.vary.vary_on_cookie`,
:func:`~django.views.decorators.vary.vary_on_headers`, and
:func:`~django.views.decorators.cache.cache_control` should come first
because :rfc:`RFC 7232 <7232#section-4.1>` requires that the headers they
set be present on 304 responses.
Shortcuts for only computing one value Shortcuts for only computing one value
====================================== ======================================