diff -r 3f6dfc312760 -r f395115070c1 server/hooks.py
--- a/server/hooks.py	Tue Aug 11 17:27:27 2009 +0200
+++ b/server/hooks.py	Wed Aug 12 18:05:19 2009 +0200
@@ -67,7 +67,7 @@
         if self.entity.eid in session.transaction_data.get('pendingeids', ()):
             # entity have been created and deleted in the same transaction
             return
-        if not self.entity.related('created_by'):
+        if not self.entity.created_by:
             session.add_relation(self.entity.eid, 'created_by', session.user.eid)