Replace hasattr by getattr.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@15988 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/patches/sqlvar.py

@@ -69,9 +69,9 @@ def SQLVar_render(self, md):
                     'Invalid datetime value for <em>%s</em>: %r' % (name, v))
 
         try:
-            if hasattr(v, 'ISO'):
+            if getattr(v, 'ISO', None) is not None:
                 v=v.ISO()
-            elif hasattr(v, 'strftime'):
+            elif getattr(v, 'strftime', None) is not None:
                 v=v.strftime('%Y-%m-%d %H:%M:%S')
             else: 
                 v=str(v)