Fix - Does not work with from __future__ import annotations

aiohttp_pydantic/__init__.py

@@ -1,5 +1,5 @@
 from .view import PydanticView
 
-__version__ = "1.12.0"
+__version__ = "1.12.1"
 
 __all__ = ("PydanticView", "__version__")

aiohttp_pydantic/injectors.py

@@ -3,7 +3,7 @@ import typing
 from inspect import signature, getmro
 from json.decoder import JSONDecodeError
 from types import SimpleNamespace
-from typing import Callable, Tuple, Literal, Type
+from typing import Callable, Tuple, Literal, Type, get_type_hints
 
 from aiohttp.web_exceptions import HTTPBadRequest
 from aiohttp.web_request import BaseRequest
@@ -201,13 +201,19 @@ def _get_group_signature(cls) -> Tuple[dict, dict]:
     mro = getmro(cls)
     for base in reversed(mro[: mro.index(Group)]):
         attrs = vars(base)
+
+        # Use __annotations__ to know if an attribute is
+        # overwrite to remove the default value.
         for attr_name, type_ in base.__annotations__.items():
-            sig[attr_name] = type_
             if (default := attrs.get(attr_name)) is None:
                 defaults.pop(attr_name, None)
             else:
                 defaults[attr_name] = default
 
+        # Use get_type_hints to have postponed annotations.
+        for attr_name, type_ in get_type_hints(base).items():
+            sig[attr_name] = type_
+
     return sig, defaults
 
 
@@ -229,26 +235,29 @@ def _parse_func_signature(
     header_args = {}
     defaults = {}
 
+    annotations = get_type_hints(func)
     for param_name, param_spec in signature(func).parameters.items():
+
         if param_name == "self":
             continue
 
         if param_spec.annotation == param_spec.empty:
             raise RuntimeError(f"The parameter {param_name} must have an annotation")
 
+        annotation = annotations[param_name]
         if param_spec.default is not param_spec.empty:
             defaults[param_name] = param_spec.default
 
         if param_spec.kind is param_spec.POSITIONAL_ONLY:
-            path_args[param_name] = param_spec.annotation
+            path_args[param_name] = annotation
 
         elif param_spec.kind is param_spec.POSITIONAL_OR_KEYWORD:
-            if is_pydantic_base_model(param_spec.annotation):
-                body_args[param_name] = param_spec.annotation
+            if is_pydantic_base_model(annotation):
+                body_args[param_name] = annotation
             else:
-                qs_args[param_name] = param_spec.annotation
+                qs_args[param_name] = annotation
         elif param_spec.kind is param_spec.KEYWORD_ONLY:
-            header_args[param_name] = param_spec.annotation
+            header_args[param_name] = annotation
         else:
             raise RuntimeError(f"You cannot use {param_spec.VAR_POSITIONAL} parameters")
 

aiohttp_pydantic/oas/view.py

@@ -1,7 +1,7 @@
 import typing
 from inspect import getdoc
 from itertools import count
-from typing import List, Type, Optional
+from typing import List, Type, Optional, get_type_hints
 
 from aiohttp.web import Response, json_response
 from aiohttp.web_app import Application
@@ -126,7 +126,7 @@ def _add_http_method_to_oas(
                 ref_template="#/components/schemas/{model}"
             )
 
-    return_type = handler.__annotations__.get("return")
+    return_type = get_type_hints(handler).get("return")
     if return_type is not None:
         _OASResponseBuilder(oas, oas_operation, status_code_descriptions).build(
             return_type

tests/test_group.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from aiohttp_pydantic.injectors import (

tests/test_hook_to_custom_response.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Iterator, List, Optional
 
 from aiohttp import web

tests/test_inheritance.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Any
 
 from aiohttp_pydantic import PydanticView

tests/test_oas/test_cmd/sample.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from aiohttp import web
 
 from aiohttp_pydantic import PydanticView

tests/test_oas/test_cmd/test_cmd.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import argparse
 from textwrap import dedent
 from io import StringIO

tests/test_oas/test_docstring_parser.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from textwrap import dedent
 
 from aiohttp_pydantic.oas.docstring_parser import (

tests/test_oas/test_struct/test_info.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from aiohttp_pydantic.oas.struct import OpenApiSpec3

tests/test_oas/test_struct/test_paths.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from aiohttp_pydantic.oas.struct import OpenApiSpec3
 
 

tests/test_oas/test_struct/test_servers.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pytest
 
 from aiohttp_pydantic.oas.struct import OpenApiSpec3

tests/test_oas/test_view.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from enum import Enum
 from typing import List, Optional, Union, Literal
 from uuid import UUID
@@ -385,15 +387,16 @@ async def test_generated_view_info_as_title():
     }
 
 
+class Pagination(Group):
+    page: int = 1
+    page_size: int = 20
+
+
 async def test_use_parameters_group_should_not_impact_the_oas(aiohttp_client):
     class PetCollectionView1(PydanticView):
         async def get(self, page: int = 1, page_size: int = 20) -> r200[List[Pet]]:
             return web.json_response()
 
-    class Pagination(Group):
-        page: int = 1
-        page_size: int = 20
-
     class PetCollectionView2(PydanticView):
         async def get(self, pagination: Pagination) -> r200[List[Pet]]:
             return web.json_response()

tests/test_parse_func_signature.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from uuid import UUID
 
 from pydantic import BaseModel

tests/test_validation_body.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Iterator, List, Optional
 
 from aiohttp import web

tests/test_validation_header.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import json
 from datetime import datetime
 from enum import Enum

tests/test_validation_path.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from aiohttp import web
 
 from aiohttp_pydantic import PydanticView

tests/test_validation_query_string.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Optional, List
 from pydantic import Field
 from aiohttp import web