def get_value(self, instance):
"""
Given an instance (i.e. any object containing data), extract the field of data to be
displayed in a cell of this column
"""
if callable(self.accessor):
return self.accessor(instance)
else:
return multigetattr(instance, self.accessor)
def to_row_dict(self, item):
"""Returns an OrderedDict (in the order given by list_export) of the exportable information for a model instance"""
row_dict = OrderedDict(
(field, multigetattr(item, field)) for field in self.list_export
)
return row_dict
def get_link_url(self, instance, parent_context):
if self._get_url_func:
return self._get_url_func(instance)
else:
id = multigetattr(instance, self.id_accessor)
return reverse(self.url_name, args=(quote(id), ))
def test_multigetattr(self):
self.assertEqual(multigetattr(self.thing, "colour"), "green")
self.assertEqual(multigetattr(self, "thing.colour"), "green")
self.assertEqual(multigetattr(self.thing, "limbs.arms"), 2)
self.assertEqual(multigetattr(self.thing, "speak"), "raaargh")
self.assertEqual(multigetattr(self, "thing.speak.0"), "r")
with self.assertRaises(AttributeError):
multigetattr(self.thing, "name")
with self.assertRaises(AttributeError):
multigetattr(self.thing, "limbs.antennae")
with self.assertRaises(AttributeError):
multigetattr(self.thing, "speak.999")
with self.assertRaises(TypeError):
multigetattr(self.thing, "feed")
with self.assertRaises(SuspiciousOperation):
multigetattr(self.thing, "poke")
self.assertFalse(self.thing.poke_was_called)