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Fixed #27846 -- Made Model.refresh_from_db() clear cached relations.

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Paulo 2017-09-19 12:51:19 -05:00 • committed by Tim Graham
parent df0aebc893
commit a7b5ad8b19
3 changed files with 22 additions and 1 deletions
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13
tests/basic/tests.py
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@ -10,7 +10,7 @@ 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):
@ -711,3 +711,14 @@ class ModelRefreshTests(TestCase):
a = Article.objects.create(pub_date=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'))