allow fk field filtering python style

ormar/queryset/field_accessor.py

@@ -63,9 +63,12 @@ def __getattr__(self, item: str) -> Any:
         return object.__getattribute__(self, item)  # pragma: no cover
 
     def _check_field(self) -> None:
-        if not self._field:
+        if (
+            not self._field
+            and not self._access_chain in self._source_model.Meta.table.columns.keys()
+        ):
             raise AttributeError(
-                "Cannot filter by Model, you need to provide model name"
+                "Cannot filter by M2M field, you need to provide model name"
             )
 
     def _select_operator(self, op: str, other: Any) -> FilterGroup:

tests/test_model_definition/test_fields_access.py

@@ -63,7 +63,7 @@ def test_fields_access():
     assert curr_field._source_model == PriceList
 
     with pytest.raises(AttributeError):
-        assert Product.category >= 3
+        assert Category.price_lists >= 3
 
 
 @pytest.mark.parametrize(