Check object type.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@10591 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Constraint/PropertyTypeValidity.py

@@ -45,6 +45,7 @@ class PropertyTypeValidity(Constraint):
 
   # Initialize type dict
   _type_dict = {
+    'object':             (type('a'), ),
     'string':             (type('a'), ),
     'text':               (type('a'), ),
     'int':                (type(1), ),