The example for django.contrib.admin.ModelAdmin.get_form modifies
self.exclude. However, since ModelAdmin instances are global and have no
thread- or request-locality, this is not safe for concurrent
requests.[1] This updated documentation demonstrates a safe method to
override admin forms on a per-request basis.
[1] https://groups.google.com/forum/#!topic/django-users/AmoUDtEefyA
This is derived from the current behaviour of FileSystemStorage.
Note that since this was not previously documented, other
implementations may not currently conform.
The issue was fixed on master in e9103402c0
so this just forwardports the test and release notes from stable/1.7.x.
Forwardport of 2d12a59938 from stable/1.7.x
Default Memcached configuration allows for a maximum object of 1MB and
will fail to set the key if it is too large. The key will be deleted from
memcached if it fails to be set. This is needed to avoid an issue with
cache_db session backend using the old value stored in memcached, instead
of the newer value stored in the database.
Custom form fields having a `queryset` attribute but no
`limit_choices_to` could no longer be used in ModelForms.
Refs #2445.
Thanks to artscoop for the report.
This snippet wasn't particularly helpful as `add_error()` is described
in greater details in the following section.
Thanks Claude Paroz for the report.
Added getvalue() to HttpResponse to return the content of the response,
along with a few other methods to partially match io.IOBase.
Thanks Claude Paroz for the suggestion and Nick Sanford for review.
Fixed issue with warning message displayed for unbound naive datetime
objects when USE_TZ is True. Adds unit test that demonstrates the issue
(discoverable when using a custom lookup in MySQL).
consistent.
The following methods **should** be implemented, but are not required:
* Storage.delete()
* Storage.exists()
* Storage.listdir()
* Storage.size()
* Storage.url()
Updated documentation to reflect this fact and give a couple of examples
where some methods may not be implemented. Add a warning that not
implementing some methods will result in a partial (possibly broken)
interface.
Ticket: https://code.djangoproject.com/ticket/23376
