feat: add raise_validation_errors parameter to setup()

To control how pydantic.ValidationError will be handled, own handler (return json) or raise exception to allow intercept in aiohttp middleware

aiohttp_pydantic/oas/__init__.py

@@ -13,10 +13,13 @@ def setup(
     apps_to_expose: Iterable[web.Application] = (),
     url_prefix: str = "/oas",
     enable: bool = True,
+    raise_validation_errors: bool = False,
 ):
     if enable:
         oas_app = web.Application()
         oas_app["apps to expose"] = tuple(apps_to_expose) or (app,)
+        for a in oas_app["apps to expose"]:
+            a['raise_validation_errors'] = raise_validation_errors
         oas_app["index template"] = jinja2.Template(
             resources.read_text("aiohttp_pydantic.oas", "index.j2")
         )

aiohttp_pydantic/view.py

@@ -83,7 +83,10 @@ def inject_params(
                 else:
                     injector.inject(self.request, args, kwargs)
             except ValidationError as error:
-                return json_response(text=error.json(), status=400)
+                if self.request.app['raise_validation_errors']:
+                    raise
+                else:
+                    return json_response(text=error.json(), status=400)
 
         return await handler(self, *args, **kwargs)