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Fixed #30339 -- Made Model.delete(keep_parents=True) preserves nested parent reverse relationships.

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Thanks Simon Charette for the review.
This commit is contained in:
Stephen Brown 2019-04-06 21:23:52 +01:00 • committed by Mariusz Felisiak
parent 29601bca9b
commit 86a3ad351e
3 changed files with 18 additions and 3 deletions
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14
tests/delete/tests.py
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@ -7,8 +7,8 @@ from django.test import TestCase, skipIfDBFeature, skipUnlessDBFeature
from .models import (
MR, A, Avatar, Base, Child, HiddenUser, HiddenUserProfile, M, M2MFrom,
M2MTo, MRNull, Origin, Parent, R, RChild, Referrer, S, T, User, create_a,
get_default_r,
M2MTo, MRNull, Origin, Parent, R, RChild, RChildChild, Referrer, S, T,
User, create_a, get_default_r,
)
@ -371,6 +371,16 @@ class DeletionTests(TestCase):
self.assertTrue(R.objects.filter(id=parent_id).exists())
self.assertTrue(S.objects.filter(pk=parent_referent_id).exists())
childchild = RChildChild.objects.create()
parent_id = childchild.rchild_ptr.r_ptr_id
child_id = childchild.rchild_ptr_id
parent_referent_id = S.objects.create(r=childchild.rchild_ptr.r_ptr).pk
childchild.delete(keep_parents=True)
self.assertFalse(RChildChild.objects.filter(id=childchild.id).exists())
self.assertTrue(RChild.objects.filter(id=child_id).exists())
self.assertTrue(R.objects.filter(id=parent_id).exists())
self.assertTrue(S.objects.filter(pk=parent_referent_id).exists())
def test_queryset_delete_returns_num_rows(self):
"""
QuerySet.delete() should return the number of deleted rows and a