Hotfix with get_or_none in Model classmethod (#299)

CHANGELOG.rst

@@ -3,6 +3,10 @@
 Changelog
 =========
 
+0.15.17
+-------
+- Now ``get_or_none(...)``, classmethod of ``Model`` class, works in the same way as ``queryset``
+
 0.15.16
 -------
 - ``get_or_none(...)`` now raises ``MultipleObjectsReturned`` if multiple object fetched. (#298)

tests/test_model_methods.py

@@ -155,6 +155,11 @@ async def test_get_or_none(self):
         mdl = await self.cls.get_or_none(name="Test2")
         self.assertEqual(mdl, None)
 
+        await self.cls.create(name="Test")
+
+        with self.assertRaises(MultipleObjectsReturned):
+            await self.cls.get_or_none(name="Test")
+
 
 class TestModelMethodsNoID(TestModelMethods):
     async def setUp(self):

tortoise/models.py

@@ -844,7 +844,7 @@ def get_or_none(cls: Type[MODEL], *args: Q, **kwargs: Any) -> QuerySetSingle[Opt
         :param args:
         :param kwargs:
         """
-        return QuerySet(cls).filter(*args, **kwargs).first()
+        return QuerySet(cls).get_or_none(*args, **kwargs)
 
     @classmethod
     async def fetch_for_list(