# HG changeset patch
# User Marcin Kuzminski <marcin@python-works.com>
# Date 2012-01-20 22:31:05
# Node ID 1cf94aadabdc9505d1cbccbf1dc54a3e0401bcac
# Parent  b6c849e64b37081d91dc5a1c8c7108b8ff1a76a9

fixes issue with initial grant/revoke permissions for users group

diff --git a/rhodecode/model/users_group.py b/rhodecode/model/users_group.py
--- a/rhodecode/model/users_group.py
+++ b/rhodecode/model/users_group.py
@@ -146,5 +146,6 @@ class UsersGroupModel(BaseModel):
 
         obj = UsersGroupToPerm.query()\
             .filter(UsersGroupToPerm.users_group == users_group)\
-            .filter(UsersGroupToPerm.permission == perm).one()
-        self.sa.delete(obj)
+            .filter(UsersGroupToPerm.permission == perm).scalar()
+        if obj:
+            self.sa.delete(obj)