[1.8.x] Fixed #24578 -- Fixed crash with QuerySet.update() on FK to O2O fields.

Thanks Anssi Kääriäinen for review.

Backport of 10b4c010ab2cdaa6ba8bfaec3e3540299ea77be from master

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/one_to_one/tests.py b/tests/one_to_one/tests.py
index 2cda25b0aa..420d55da38 100644
--- a/tests/one_to_one/tests.py
+++ b/tests/one_to_one/tests.py
@@ -468,3 +468,14 @@ class OneToOneTests(TestCase):
         # refs #21563
         self.assertFalse(hasattr(Director(), 'director'))
         self.assertFalse(hasattr(School(), 'school'))
+
+    def test_update_one_to_one_pk(self):
+        p1 = Place.objects.create()
+        p2 = Place.objects.create()
+        r1 = Restaurant.objects.create(place=p1)
+        r2 = Restaurant.objects.create(place=p2)
+        w = Waiter.objects.create(restaurant=r1)
+
+        Waiter.objects.update(restaurant=r2)
+        w.refresh_from_db()
+        self.assertEqual(w.restaurant, r2)