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Fixed #19607 - prefetch_related crash

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Thanks to av@rdf.ru and flarno11@yahoo.de for the report.
This commit is contained in:
Luke Plant 2013-05-24 10:01:34 +01:00
parent 48424adaba
commit 4fd94969d8
3 changed files with 51 additions and 3 deletions
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25
tests/prefetch_related/tests.py
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@ -8,7 +8,8 @@ from django.utils import six
from .models import (Author, Book, Reader, Qualification, Teacher, Department,
TaggedItem, Bookmark, AuthorAddress, FavoriteAuthors, AuthorWithAge,
BookWithYear, BookReview, Person, House, Room, Employee, Comment)
BookWithYear, BookReview, Person, House, Room, Employee, Comment,
LessonEntry, WordEntry)
class PrefetchRelatedTests(TestCase):
@ -618,3 +619,25 @@ class MultiDbTests(TestCase):
ages = ", ".join(str(a.authorwithage.age) for a in A.prefetch_related('authorwithage'))
self.assertEqual(ages, "50, 49")
class Ticket19607Tests(TestCase):
def setUp(self):
for id, name1, name2 in [
(1, 'einfach', 'simple'),
(2, 'schwierig', 'difficult'),
]:
LessonEntry.objects.create(id=id, name1=name1, name2=name2)
for id, lesson_entry_id, name in [
(1, 1, 'einfach'),
(2, 1, 'simple'),
(3, 2, 'schwierig'),
(4, 2, 'difficult'),
]:
WordEntry.objects.create(id=id, lesson_entry_id=lesson_entry_id, name=name)
def test_bug(self):
list(WordEntry.objects.prefetch_related('lesson_entry', 'lesson_entry__wordentry_set'))