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Code Issues 32 Releases Wiki Activity

[2.0.x] Fixed #27846 -- Made Model.refresh_from_db() clear cached relations.

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Backport of a7b5ad8b19 from master
This commit is contained in:
Paulo
2017-09-19 12:51:19 -05:00
committed by Tim Graham
parent 51998a2988
commit 5d3f2aa3f1
3 changed files with 22 additions and 1 deletions
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13
tests/basic/tests.py
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@@ -11,7 +11,7 @@ from django.test import (
)
from django.utils.translation import gettext_lazy
from .models import Article, ArticleSelectOnSave, SelfRef
from .models import Article, ArticleSelectOnSave, FeaturedArticle, SelfRef
class ModelInstanceCreationTests(TestCase):
@@ -745,3 +745,14 @@ class ModelRefreshTests(TestCase):
a = Article.objects.create(pub_date=self._truncate_ms(datetime.now()))
with self.assertNumQueries(0):
a.refresh_from_db(fields=[])
def test_refresh_clears_reverse_related(self):
"""refresh_from_db() clear cached reverse relations."""
article = Article.objects.create(
headline='Parrot programs in Python',
pub_date=datetime(2005, 7, 28),
)
self.assertFalse(hasattr(article, 'featured'))
FeaturedArticle.objects.create(article_id=article.pk)
article.refresh_from_db()
self.assertTrue(hasattr(article, 'featured'))