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Code Issues 32 Releases Wiki Activity

Fixed #33937 -- Optimized serialization of related m2m fields without natural keys.

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This commit is contained in:
Mark Evans
2022-09-03 09:53:58 -04:00
committed by Mariusz Felisiak
parent 604fadde11
commit 19e0587ee5
4 changed files with 42 additions and 2 deletions
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27
tests/serializers/tests.py
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@@ -410,6 +410,33 @@ class SerializersTestBase:
self.assertEqual(self._get_field_values(child_data, "parent_m2m"), [])
self.assertEqual(self._get_field_values(child_data, "parent_data"), [])
def test_serialize_only_pk(self):
with self.assertNumQueries(5) as ctx:
serializers.serialize(
self.serializer_name,
Article.objects.all(),
use_natural_foreign_keys=False,
)
categories_sql = ctx[1]["sql"]
self.assertNotIn(connection.ops.quote_name("meta_data_id"), categories_sql)
meta_data_sql = ctx[2]["sql"]
self.assertNotIn(connection.ops.quote_name("kind"), meta_data_sql)
def test_serialize_no_only_pk_with_natural_keys(self):
with self.assertNumQueries(5) as ctx:
serializers.serialize(
self.serializer_name,
Article.objects.all(),
use_natural_foreign_keys=True,
)
categories_sql = ctx[1]["sql"]
self.assertNotIn(connection.ops.quote_name("meta_data_id"), categories_sql)
# CategoryMetaData has natural_key().
meta_data_sql = ctx[2]["sql"]
self.assertIn(connection.ops.quote_name("kind"), meta_data_sql)
class SerializerAPITests(SimpleTestCase):
def test_stream_class(self):