mirrors/django
1
0
Fork 0
mirror of https://github.com/django/django.git synced 2025-08-04 02:48:35 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Fixed #25492 -- Checked deferred foreign key constraints before dropping them.

Browse source 
This allows running foreign key data and schema altering operations in the
same migration on PostgreSQL.

Thanks Tim for review.
This commit is contained in:
Simon Charette 2016-12-17 15:06:47 -05:00
parent a4cac17200
commit cd7efa2033
2 changed files with 21 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

17
tests/schema/tests.py
View file

@ -532,6 +532,23 @@ class SchemaTests(TransactionTestCase):
with connection.schema_editor() as editor:
editor.alter_field(Note, old_field, new_field, strict=True)
@skipUnlessDBFeature('can_defer_constraint_checks', 'can_rollback_ddl')
def test_alter_fk_checks_deferred_constraints(self):
"""
#25492 - Altering a foreign key's structure and data in the same
transaction.
"""
with connection.schema_editor() as editor:
editor.create_model(Node)
old_field = Node._meta.get_field('parent')
new_field = ForeignKey(Node, CASCADE)
new_field.set_attributes_from_name('parent')
parent = Node.objects.create()
with connection.schema_editor() as editor:
# Update the parent FK to create a deferred constraint check.
Node.objects.update(parent=parent)
editor.alter_field(Node, old_field, new_field, strict=True)
def test_alter_text_field_to_date_field(self):
"""
#25002 - Test conversion of text field to date field.