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
14694	defer() doesn't work with reverse relations	Sayane	nobody	"It's impossible to defer REVERSED relation. I'm not able to reproduce whole queryset, because it's generated automatically.
{{{
Traceback:
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/core/handlers/base.py"" in get_response
  109.                         response = callback(request, *callback_args, **callback_kwargs)
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/views/generic/base.py"" in view
  52.             return self.dispatch(request, *args, **kwargs)
File ""/home/sayane/Programowanie/qcr2/unit/../qcr/core/ajax/views.py"" in dispatch
  55.         resp = super(AjaxView, self).dispatch(request, *args, **kwargs)
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/views/generic/base.py"" in dispatch
  73.         return handler(request, *args, **kwargs)
File ""/home/sayane/Programowanie/qcr2/unit/../qcr/core/ajax/store.py"" in post
  101.         total = self.queryset.count()
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/db/models/query.py"" in count
  327.         return self.query.get_count(using=self.db)
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/db/models/sql/query.py"" in get_count
  391.             obj.add_subquery(subquery, using=using)
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/db/models/sql/subqueries.py"" in add_subquery
  222.         self.subquery, self.sub_params = query.get_compiler(using).as_sql(with_col_aliases=True)
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/db/models/sql/compiler.py"" in as_sql
  58.         self.pre_sql_setup()
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/db/models/sql/compiler.py"" in pre_sql_setup
  29.             self.fill_related_selections()
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/db/models/sql/compiler.py"" in fill_related_selections
  578.                     opts=f.rel.to._meta, as_pairs=True)
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/db/models/sql/compiler.py"" in get_default_columns
  237.         only_load = self.deferred_to_columns()
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/db/models/sql/compiler.py"" in deferred_to_columns
  666.         self.query.deferred_to_data(columns, self.query.deferred_to_columns_cb)
File ""/home/sayane/Programowanie/virtenv/dj13/lib/python2.6/site-packages/django/db/models/sql/query.py"" in deferred_to_data
  540.                 cur_model = opts.get_field_by_name(name)[0].rel.to

Exception Type: AttributeError at /a/case/stores/case/
Exception Value: 'RelatedObject' object has no attribute 'rel'
}}}

When trying with simple query, it doesn't return any results:
{{{
In [7]: Case.objects.select_related('info')
Out[7]: [<Case: test/01>]

In [8]: Case.objects.select_related('info').defer('info__requirements')
Out[8]: []

In [9]: Case.objects.select_related('info').defer('info__requirements').count()
Out[9]: 1
}}}"	Bug	closed	Database layer (models, ORM)	dev	Normal	fixed	defer only OneToOneField reverse relationship	Sayane anssi.kaariainen@… real.human@…	Accepted	1	0	0	0	0	0