Index: Base.py
===================================================================
--- Base.py	(révision 15661)
+++ Base.py	(copie de travail)
@@ -1435,10 +1435,9 @@
       Returns the user ID of the owner if Owner role
       has View permission. Returns None else.
     """
-    path, user_id = self.getOwnerTuple()
-    if 'Owner' in rolesForPermissionOn(Permissions.View, self):
-      path, user_id = self.getOwnerTuple()
-      return user_id
+    owner = self.getWrappedOwner()
+    if owner is not None and owner.has_permission(Permissions.View, self):
+      return str(owner)
     return None
 
   # Private accessors for the implementation of relations based on