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[2.0.x] Fixed #28749 -- Added subquery support for ArrayField's __in lookup.
Backport of e554b72a2a
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@ -240,6 +240,9 @@ class ArrayLenTransform(Transform):
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class ArrayInLookup(In):
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def get_prep_lookup(self):
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values = super().get_prep_lookup()
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if hasattr(self.rhs, '_prepare'):
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# Subqueries don't need further preparation.
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return values
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# In.process_rhs() expects values to be hashable, so convert lists
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# to tuples.
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prepared_values = []
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@ -176,6 +176,15 @@ class TestQuerying(PostgreSQLTestCase):
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self.objs[:2]
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)
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def test_in_subquery(self):
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IntegerArrayModel.objects.create(field=[2, 3])
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self.assertSequenceEqual(
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NullableIntegerArrayModel.objects.filter(
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field__in=IntegerArrayModel.objects.all().values_list('field', flat=True)
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),
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self.objs[2:3]
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)
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@unittest.expectedFailure
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def test_in_including_F_object(self):
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# This test asserts that Array objects passed to filters can be
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