[FIX] hasattr in controllers returns always 'True' so check error if

AttributeError is raised and catch it

web_warning_on_save/controller.py

@@ -19,9 +19,12 @@
 #
 ##############################################################################
 
+import xmlrpclib
+
 import openerp
 
 
+
 class WarningOnSaveController(openerp.addons.web.http.Controller):
     _cp_path = "/web_warning_on_save"
 
@@ -32,8 +35,12 @@ class WarningOnSaveController(openerp.addons.web.http.Controller):
          if method does not exist in the model, do nothing
         """
         m = req.session.model(model)
-        if hasattr(m, 'check_warning_on_save'):
+        try:
             return getattr(m, 'check_warning_on_save')(id, req.context)
 
-        else:
+        except xmlrpclib.Fault as e:
+            if 'AttributeError' in e.faultString:
                 return False
+            else:
+                raise openerp.osv.osv.except_osv('Error', e.faultCode) 
+