Use key_name instead of link_id
Some entities do not have a link_id, but all entities are guaranteed
to have a key_name (or an id).
"""
This is a urlconf to be loaded by tests.py. Add any urls needed
for tests only.
"""
from django.conf.urls.defaults import *
from django.contrib.formtools.tests import *
urlpatterns = patterns('',
(r'^test1/', TestFormPreview(TestForm)),
)