diff -r d904f4a76f6f -r d35ffa6ca643 app/soc/models/group.py
--- a/app/soc/models/group.py	Thu Oct 16 18:08:35 2008 +0000
+++ b/app/soc/models/group.py	Thu Oct 16 23:23:16 2008 +0000
@@ -37,6 +37,9 @@
   """Common data fields for all groups.
   """
 
+  #: Defines which fields are uses as the key_name
+  key_fields = ['link_name']
+
   #: Required field storing name of the group.
   name = db.StringProperty(required=True,
       verbose_name=ugettext_lazy('Name'))