#28497: QuerySet.filter() with a sliced QuerySet crashes
-------------------------------------+-------------------------------------
Reporter: Sergey Fedoseev | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: master
(models, ORM) |
Severity: Release blocker | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Tim Graham):
Here's a regression test. It's not clear to me why this shouldn't be
allowed. What should the error message say?
{{{ #!diff
diff --git a/tests/lookup/tests.py b/tests/lookup/tests.py
index 25098af..7eeaa26 100644
--- a/tests/lookup/tests.py
+++ b/tests/lookup/tests.py
@@ -138,6 +138,12 @@ class LookupTests(TestCase):
with self.assertNumQueries(expected_num_queries):
self.assertEqual(Author.objects.in_bulk(authors.keys()),
authors)
+ def test_filter_with_sliced(self):
+ self.assertSequenceEqual(
+ Article.objects.filter(author=Author.objects.all()[:1]),
+ [self.a4, self.a2, self.a3, self.a1],
+ )
+
def test_values(self):
# values() returns a list of dictionaries instead of object
instances --
# and you can specify which fields you want to retrieve.
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/28497#comment:5>
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