Fixed #3142 -- Optimized the assignment of m2m and m2o relation sets. Thanks, (and well spotted!) mitakummaa@gmail.com.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@4231 bcc190cf-cafb-0310-a4f2-bffc1f526a37

AUTHORS

@@ -123,6 +123,7 @@ answer newbie questions, and generally made Django that much better:
     Jason McBrayer <http://www.carcosa.net/jason/>
     mccutchen@gmail.com
     michael.mcewan@gmail.com
+    mitakummaa@gmail.com
     mmarshall
     Eric Moritz <http://eric.themoritzfamily.com/>
     Robin Munn <http://www.geekforgod.com/>

django/db/models/fields/related.py

@@ -256,8 +256,7 @@ class ForeignRelatedObjectsDescriptor(object):
         # Otherwise, just move the named objects into the set.
         if self.related.field.null:
             manager.clear()
-        for obj in value:
-            manager.add(obj)
+        manager.add(*value)
 
 def create_many_related_manager(superclass):
     """Creates a manager that subclasses 'superclass' (which is a Manager)
@@ -405,8 +404,7 @@ class ManyRelatedObjectsDescriptor(object):
 
         manager = self.__get__(instance)
         manager.clear()
-        for obj in value:
-            manager.add(obj)
+        manager.add(*value)
 
 class ReverseManyRelatedObjectsDescriptor(object):
     # This class provides the functionality that makes the related-object
@@ -447,8 +445,7 @@ class ReverseManyRelatedObjectsDescriptor(object):
 
         manager = self.__get__(instance)
         manager.clear()
-        for obj in value:
-            manager.add(obj)
+        manager.add(*value)
 
 class ForeignKey(RelatedField, Field):
     empty_strings_allowed = False