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[4.1.x] Fixed #33932 -- Fixed altering AutoFields to OneToOneField on PostgreSQL.

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Regression in 2eea361eff.

Backport of e3cb8bcb7d from main
This commit is contained in:
Benoît Vinot
2022-08-17 13:19:16 +02:00
committed by Mariusz Felisiak
parent bee09df39f
commit 85942cf669
3 changed files with 31 additions and 1 deletions
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26
tests/schema/tests.py
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@@ -1500,6 +1500,32 @@ class SchemaTests(TransactionTestCase):
# OneToOneField.
self.assertEqual(counts, {"fks": expected_fks, "uniques": 1, "indexes": 0})
def test_autofield_to_o2o(self):
with connection.schema_editor() as editor:
editor.create_model(Author)
editor.create_model(Note)
# Rename the field.
old_field = Author._meta.get_field("id")
new_field = AutoField(primary_key=True)
new_field.set_attributes_from_name("note_ptr")
new_field.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, old_field, new_field, strict=True)
# Alter AutoField to OneToOneField.
new_field_o2o = OneToOneField(Note, CASCADE)
new_field_o2o.set_attributes_from_name("note_ptr")
new_field_o2o.model = Author
with connection.schema_editor() as editor:
editor.alter_field(Author, new_field, new_field_o2o, strict=True)
columns = self.column_classes(Author)
field_type, _ = columns["note_ptr_id"]
self.assertEqual(
field_type, connection.features.introspected_field_types["IntegerField"]
)
def test_alter_field_fk_keeps_index(self):
with connection.schema_editor() as editor:
editor.create_model(Author)