#16409: `defer()` and `only()` don't play nice with `annotate()`
-------------------------------------+-------------------------------------
Reporter: mrmachine | Owner: nobody
Type: Bug | Status: new
Milestone: 1.4 | Component: Database layer
Version: SVN | (models, ORM)
Resolution: | Severity: Normal
Triage Stage: | Keywords: annotate defer only
Unreviewed | count
Needs documentation: 0 | Has patch: 1
Patch needs improvement: 1 | Needs tests: 0
UI/UX: 0 | Easy pickings: 0
-------------------------------------+-------------------------------------
Changes (by mrmachine):
* needs_docs: => 0
* has_patch: 0 => 1
* needs_tests: => 0
* needs_better_patch: => 1
Comment:
Added a patch with a failing test case.
{{{
Creating test database for alias 'default'...
Creating test database for alias 'other'...
E
======================================================================
ERROR: test_defer (modeltests.defer.tests.DeferTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File
"/Users/mrmachine/Subversion/django/tests/modeltests/defer/tests.py", line
141, in test_defer
self.assertEqual(len(Secondary.objects.annotate(Count('primary')).defer('first')),
1)
File "/Users/mrmachine/Subversion/django/django/db/models/query.py",
line 82, in __len__
self._result_cache = list(self.iterator())
File "/Users/mrmachine/Subversion/django/django/db/models/query.py",
line 300, in iterator
setattr(obj, aggregate, row[i+aggregate_start])
IndexError: tuple index out of range
----------------------------------------------------------------------
Ran 1 test in 0.120s
FAILED (errors=1)
Destroying test database for alias 'default'...
Destroying test database for alias 'other'...
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/16409#comment:1>
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