id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
19151	EmptyQuerySet is missing overrides for values() and values_list() methods.	Bradley Ayers <brad@…>	Jan Bednařík	"`AnonymousUser.groups` breaks down it's facade with `values()`, `values_list()`:

{{{
>>> AnonymousUser().groups.values_list('name')
Traceback (most recent call last):
  File ""<snip>"", line 1, in <module>
  File ""<snip>/django/db/models/manager.py"", line 182, in values_list
    return self.get_query_set().values_list(*args, **kwargs)
  File ""<snip>/django/db/models/query.py"", line 585, in values_list
    _fields=fields)
  File ""<snip>/django/db/models/query.py"", line 1138, in _clone
    c = super(EmptyQuerySet, self)._clone(klass, setup=setup, **kwargs)
  File ""<snip>/django/db/models/query.py"", line 864, in _clone
    c._setup_query()
  File ""<snip>/django/db/models/query.py"", line 988, in _setup_query
    self.query.add_fields(self.field_names, True)
  File ""<snip>/django/db/models/sql/query.py"", line 1643, in add_fields
    alias = self.get_initial_alias()
  File ""<snip>/django/db/models/sql/query.py"", line 840, in get_initial_alias
    alias = self.join((None, self.model._meta.db_table, None, None))
AttributeError: 'NoneType' object has no attribute '_meta'
}}}

{{{
>>> AnonymousUser().groups.values_list()
Traceback (most recent call last):
  File ""<console>"", line 1, in <module>
  File ""<snip>/django/db/models/manager.py"", line 182, in values_list
    return self.get_query_set().values_list(*args, **kwargs)
  File ""<snip>/django/db/models/query.py"", line 585, in values_list
    _fields=fields)
  File ""<snip>/django/db/models/query.py"", line 1138, in _clone
    c = super(EmptyQuerySet, self)._clone(klass, setup=setup, **kwargs)
  File ""<snip>/django/db/models/query.py"", line 864, in _clone
    c._setup_query()
  File ""<snip>/django/db/models/query.py"", line 982, in _setup_query
    self.field_names = [f.attname for f in self.model._meta.fields]
AttributeError: 'NoneType' object has no attribute '_meta'
}}}

"	Bug	closed	Database layer (models, ORM)	dev	Normal	fixed			Ready for checkin	1	0	0	0	1	0