Merged revisions 4186 to 4454 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/sqlalchemy@4455 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 7 insertions, 1 deletions

diff --git a/django/db/models/manager.py b/django/db/models/manager.py
index 6005874516..b60eed262a 100644
--- a/django/db/models/manager.py
+++ b/django/db/models/manager.py
@@ -1,4 +1,4 @@
-from django.db.models.query import QuerySet
+from django.db.models.query import QuerySet, EmptyQuerySet
 from django.dispatch import dispatcher
 from django.db.models import signals
 from django.db.models.fields import FieldDoesNotExist
@@ -41,12 +41,18 @@ class Manager(object):
     #######################
     # PROXIES TO QUERYSET #
     #######################
+    
+    def get_empty_query_set(self):
+        return EmptyQuerySet(self.model)
 
     def get_query_set(self):
         """Returns a new QuerySet object.  Subclasses can override this method
         to easily customise the behaviour of the Manager.
         """
         return QuerySet(self.model)
+    
+    def none(self):
+        return self.get_empty_query_set()
 
     def all(self):
         return self.get_query_set()