Django middleware error response validation fix

Author: p1c2u

openapi_core/contrib/django/middlewares.py

@@ -31,11 +31,10 @@ def __call__(self, request):
         openapi_request = self._get_openapi_request(request)
         req_result = self.validation_processor.process_request(openapi_request)
         if req_result.errors:
-            return self._handle_request_errors(req_result, request)
-
-        request.openapi = req_result
-
-        response = self.get_response(request)
+            response = self._handle_request_errors(req_result, request)
+        else:
+            request.openapi = req_result
+            response = self.get_response(request)
 
         openapi_response = self._get_openapi_response(response)
         resp_result = self.validation_processor.process_response(

tests/integration/data/v3.0/petstore.yaml

@@ -93,6 +93,8 @@ paths:
       responses:
         '200':
           $ref: "#/components/responses/PetsResponse"
+        '400':
+          $ref: "#/components/responses/ErrorResponse"
         '404':
           $ref: "#/components/responses/HtmlResponse"
     post:
@@ -403,6 +405,31 @@ components:
           default: 400
         message:
           type: string
+    StandardError:
+      type: object
+      x-model: StandardError
+      required:
+        - title
+        - status
+        - class
+      properties:
+        title:
+          type: string
+        status:
+          type: integer
+          format: int32
+          default: 400
+        class:
+          type: string
+    StandardErrors:
+      type: object
+      required:
+        - errors
+      properties:
+        errors:
+          type: array
+          items:
+            $ref: "#/components/schemas/StandardError"
     ExtendedError:
       type: object
       x-model: ExtendedError
@@ -430,7 +457,9 @@ components:
       content:
         application/json:
           schema:
-            $ref: "#/components/schemas/ExtendedError"
+            oneOf:
+              - $ref: "#/components/schemas/StandardErrors"
+              - $ref: "#/components/schemas/ExtendedError"
     HtmlResponse:
       description: HTML page
       content: