# HG changeset patch
# User Sylvain Thénault <sylvain.thenault@logilab.fr>
# Date 1345637842 -7200
# Node ID 199fefe396ab18318b8719aa35b86636cf6bc091
# Parent  75fe6dca79b4835720233a28e5b9143f9e2909f3
[form] add assertion to ensure field has a name when `role_name` is called

diff -r 75fe6dca79b4 -r 199fefe396ab web/formfields.py
--- a/web/formfields.py	Tue Aug 21 15:23:29 2012 +0200
+++ b/web/formfields.py	Wed Aug 22 14:17:22 2012 +0200
@@ -313,6 +313,7 @@
 
     def role_name(self):
         """return <field.name>-<field.role> if role is specified, else field.name"""
+        assert self.name, 'field without a name (give it to constructor for explicitly built fields)'
         if self.role is not None:
             return role_name(self.name, self.role)
         return self.name