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Fixed #31926 -- Fixed recreating queryset with FilteredRelation when using a pickled Query.

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In a pickled join, the join_fields had the same values, but weren't the
same object (contrary to when not pickling the QuerySet).
This commit is contained in:
David-Wobrock
2020-10-03 20:30:53 +02:00
committed by Mariusz Felisiak
parent 292b3be698
commit c32d8f33d8
2 changed files with 69 additions and 0 deletions
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34
tests/queryset_pickle/tests.py
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@@ -219,6 +219,40 @@ class PickleabilityTestCase(TestCase):
with self.assertNumQueries(0):
self.assert_pickles(groups)
def test_pickle_filteredrelation(self):
group = Group.objects.create(name='group')
event_1 = Event.objects.create(title='Big event', group=group)
event_2 = Event.objects.create(title='Small event', group=group)
Happening.objects.bulk_create([
Happening(event=event_1, number1=5),
Happening(event=event_2, number1=3),
])
groups = Group.objects.annotate(
big_events=models.FilteredRelation(
'event',
condition=models.Q(event__title__startswith='Big'),
),
).annotate(sum_number=models.Sum('big_events__happening__number1'))
groups_query = pickle.loads(pickle.dumps(groups.query))
groups = Group.objects.all()
groups.query = groups_query
self.assertEqual(groups.get().sum_number, 5)
def test_pickle_filteredrelation_m2m(self):
group = Group.objects.create(name='group')
m2mmodel = M2MModel.objects.create()
m2mmodel.groups.add(group)
groups = Group.objects.annotate(
first_m2mmodels=models.FilteredRelation(
'm2mmodel',
condition=models.Q(m2mmodel__pk__lt=10),
),
).annotate(count_groups=models.Count('first_m2mmodels__groups'))
groups_query = pickle.loads(pickle.dumps(groups.query))
groups = Group.objects.all()
groups.query = groups_query
self.assertEqual(groups.get().count_groups, 1)
def test_annotation_with_callable_default(self):
# Happening.when has a callable default of datetime.datetime.now.
qs = Happening.objects.annotate(latest_time=models.Max('when'))