update the dosc with split of queries, fix tests

ormar/fields/foreign_key.py

@@ -1,3 +1,4 @@
+import sys
 import uuid
 from dataclasses import dataclass
 from typing import Any, List, Optional, TYPE_CHECKING, Tuple, Type, Union
@@ -14,6 +15,11 @@ if TYPE_CHECKING:  # pragma no cover
     from ormar.models import Model, NewBaseModel
     from ormar.fields import ManyToManyField
 
+    if sys.version_info < (3, 7):
+        ToType = Type["Model"]
+    else:
+        ToType = Union[Type["Model"], "ForwardRef"]
+
 
 def create_dummy_instance(fk: Type["Model"], pk: Any = None) -> "Model":
     """
@@ -124,7 +130,7 @@ class ForeignKeyConstraint:
 
 
 def ForeignKey(  # noqa CFQ002
-    to: Union[Type["Model"], "ForwardRef"],
+    to: "ToType",
     *,
     name: str = None,
     unique: bool = False,

ormar/fields/many_to_many.py

@@ -1,3 +1,4 @@
+import sys
 from typing import Any, List, Optional, TYPE_CHECKING, Tuple, Type, Union
 
 from pydantic.typing import ForwardRef, evaluate_forwardref
@@ -8,6 +9,11 @@ from ormar.fields.foreign_key import ForeignKeyField
 if TYPE_CHECKING:  # pragma no cover
     from ormar.models import Model
 
+    if sys.version_info < (3, 7):
+        ToType = Type["Model"]
+    else:
+        ToType = Union[Type["Model"], "ForwardRef"]
+
 REF_PREFIX = "#/components/schemas/"
 
 
@@ -36,8 +42,8 @@ def populate_m2m_params_based_on_to_model(
 
 
 def ManyToMany(
-    to: Union[Type["Model"], ForwardRef],
-    through: Union[Type["Model"], ForwardRef],
+    to: "ToType",
+    through: "ToType",
     *,
     name: str = None,
     unique: bool = False,