diff --git a/openerp/addons/base/ir/ir_http.py b/openerp/addons/base/ir/ir_http.py
index 6f77f9fe86b..9fd485de57c 100644
--- a/openerp/addons/base/ir/ir_http.py
+++ b/openerp/addons/base/ir/ir_http.py
@@ -55,9 +55,6 @@ class ir_http(osv.AbstractModel):
     
     _description = "HTTP routing"
 
-    def __init__(self, registry, cr):
-        osv.osv.__init__(self, registry, cr)
-
     def _find_handler(self):
         # TODO move to __init__(self, registry, cr)
         if not hasattr(self, 'routing_map'):
diff --git a/openerp/http.py b/openerp/http.py
index 0a0f135c935..a7964be6231 100644
--- a/openerp/http.py
+++ b/openerp/http.py
@@ -169,10 +169,12 @@ class WebRequest(object):
                 # Backward for 7.0
                 if getattr(self.func, '_first_arg_is_req', False):
                     args = (request,) + args
-                # TODO by chs
-                #@service_model.check
-                #def checked_call(dbname, *a, **kw):
-                #    return func(*a, **kw)
+                # Correct exception handling and concurency retry
+                @service_model.check
+                def checked_call(dbname, *a, **kw):
+                    return self.func(*a, **kw)
+                if self.db:
+                    return checked_call(self.db, *args, **kwargs)
                 return self.func(*args, **kwargs)
         finally:
             # just to be sure no one tries to re-use the request