Fixed #3400 -- Support for lookup separator with list_filter admin option. Thanks to DrMeers and vitek_pliska for the patch!

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14674 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/ref/contrib/admin/index.txt

@@ -458,6 +458,11 @@ how both ``list_display`` and ``list_filter`` work::
         list_display = ('username', 'email', 'first_name', 'last_name', 'is_staff')
         list_filter = ('is_staff', 'is_superuser')
 
+Fields in ``list_filter`` can also span relations using the ``__`` lookup::
+
+    class UserAdminWithLookup(UserAdmin):
+        list_filter = ('groups__name')
+
 The above code results in an admin change list page that looks like this:
 
     .. image:: _images/users_changelist.png

docs/releases/1.3.txt

@@ -159,6 +159,8 @@ requests. These include:
       <cache_key_prefixing>` and :ref:`transformation
       <cache_key_transformation>` has been added to the cache API.
 
+    * Support for lookups spanning relations in admin's ``list_filter``.
+
 .. _backwards-incompatible-changes-1.3:
 
 Backwards-incompatible changes in 1.3