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Code Issues 32 Releases Wiki Activity

Fixed #21126 -- QuerySet value conversion failure

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A .annotate().select_related() query resulted in misaligned rows vs
columns for compiler.resolve_columns() method.

Report & patch by Michael Manfre.
This commit is contained in:
Anssi Kääriäinen
2013-09-23 18:18:20 +03:00
parent 42b9feb2e7
commit 83554b018e
3 changed files with 21 additions and 4 deletions
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11
tests/aggregation_regress/tests.py
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@@ -393,6 +393,17 @@ class AggregationTests(TestCase):
qs = Entries.objects.annotate(clue_count=Count('clues__ID'))
self.assertQuerysetEqual(qs, [])
def test_boolean_conversion(self):
# Aggregates mixed up ordering of columns for backend's convert_values
# method. Refs #21126.
e = Entries.objects.create(Entry='foo')
c = Clues.objects.create(EntryID=e, Clue='bar')
qs = Clues.objects.select_related('EntryID').annotate(Count('ID'))
self.assertQuerysetEqual(
qs, [c], lambda x: x)
self.assertEqual(qs[0].EntryID, e)
self.assertIs(qs[0].EntryID.Exclude, False)
def test_empty(self):
# Regression for #10089: Check handling of empty result sets with
# aggregates