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Fixed #11882 -- Added documentation for formfield_for_manytomany. Thanks to Rob Hudson, timo and Simon Meers for their work on the patch. 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@13552 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Russell Keith-Magee 2010-08-07 14:56:16 +00:00
parent 7aa7943434
commit 6ac4aba918
1 changed files with 17 additions and 2 deletions
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19
docs/ref/contrib/admin/index.txt
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@ -869,11 +869,26 @@ return a subset of objects for this foreign key field based on the user::
def formfield_for_foreignkey(self, db_field, request, **kwargs):
if db_field.name == "car":
kwargs["queryset"] = Car.objects.filter(owner=request.user)
return db_field.formfield(**kwargs)
return super(MyModelAdmin, self).formfield_for_foreignkey(db_field, request, **kwargs)
This uses the ``HttpRequest`` instance to filter the ``Car`` foreign key field
to only the cars owned by the ``User`` instance.
to only display the cars owned by the ``User`` instance.
.. method:: ModelAdmin.formfield_for_manytomany(self, db_field, request, **kwargs)
.. versionadded:: 1.1
Like the ``formfield_for_foreignkey`` method, the ``formfield_for_manytomany``
method can be overridden to change the default formfield for a many to many
field. For example, if an owner can own multiple cars and cars can belong
to multiple owners -- a many to many relationship -- you could filter the
``Car`` foreign key field to only display the cars owned by the ``User``::
class MyModelAdmin(admin.ModelAdmin):
def formfield_for_manytomany(self, db_field, request, **kwargs):
if db_field.name == "cars":
kwargs["queryset"] = Car.objects.filter(owner=request.user)
return super(MyModelAdmin, self).formfield_for_manytomany(db_field, request, **kwargs)
.. method:: ModelAdmin.queryset(self, request)