def test_filter_isnull(self):
results = Permission.objects.filter(filter_isnull('role'))
self.assertEqual(0, results.count())
results = Permission.objects.filter(filter_isnull('agent'))
self.assertEqual(1, results.count())
results = Permission.objects.filter(filter_isnull('target'))
self.assertEqual(0, results.count())
def wrapped(queryset, value=ANY, prefix=None):
if value is ANY:
return Q()
if value is NULL:
return filter_isnull(key, prefix)
# The fn should return a Q object.
return fn(queryset, **{key: value, 'prefix': prefix})
def _get_agent_query(self, agent, prefix):
# Always add in isnull
return (filter_isnull('agent', prefix)
| self._get_filter(get_key('agent', prefix), agent))
