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Fixed #29118 -- Fixed crash with QuerySet.order_by(Exists(...)).

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Raphael Gaschignard 2018-02-07 12:09:43 +09:00 • committed by Tim Graham
parent 1a1264f149
commit bf26f66029
3 changed files with 14 additions and 6 deletions
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14
tests/expressions/tests.py
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@ -38,10 +38,8 @@ class BasicExpressionsTests(TestCase):
name="Foobar Ltd.", num_employees=3, num_chairs=4,
ceo=Employee.objects.create(firstname="Frank", lastname="Meyer", salary=20)
)
cls.gmbh = Company.objects.create(
name="Test GmbH", num_employees=32, num_chairs=1,
ceo=Employee.objects.create(firstname="Max", lastname="Mustermann", salary=30)
)
cls.max = Employee.objects.create(firstname='Max', lastname='Mustermann', salary=30)
cls.gmbh = Company.objects.create(name='Test GmbH', num_employees=32, num_chairs=1, ceo=cls.max)
def setUp(self):
self.company_query = Company.objects.values(
@ -399,6 +397,14 @@ class BasicExpressionsTests(TestCase):
)
self.assertEqual(str(qs.query).count('JOIN'), 2)
def test_order_by_exists(self):
mary = Employee.objects.create(firstname='Mary', lastname='Mustermann', salary=20)
mustermanns_by_seniority = Employee.objects.filter(lastname='Mustermann').order_by(
# Order by whether the employee is the CEO of a company
Exists(Company.objects.filter(ceo=OuterRef('pk'))).desc()
)
self.assertSequenceEqual(mustermanns_by_seniority, [self.max, mary])
def test_outerref(self):
inner = Company.objects.filter(point_of_contact=OuterRef('pk'))
msg = (