Implement ErrorResponseProvider interface and add the error response

Author: TheGeekyM

src/RequestObject.php

@@ -2,9 +2,12 @@
 
 namespace Fesor\RequestObject;
 
+use Symfony\Component\HttpFoundation\JsonResponse;
 use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintViolation;
+use Symfony\Component\Validator\ConstraintViolationListInterface;
 
-class RequestObject
+class RequestObject implements ErrorResponseProvider
 {
     private $payload;
 
@@ -56,4 +59,20 @@ public function all()
     {
         return $this->payload;
     }
+
+    /**
+     * @param ConstraintViolationListInterface $errors
+     *
+     * @return JsonResponse|\Symfony\Component\HttpFoundation\Response
+     */
+    public function getErrorResponse(ConstraintViolationListInterface $errors)
+    {
+        return new JsonResponse([
+            'errors' => array_map(function (ConstraintViolation $violation) {
+                return [
+                    $violation->getPropertyPath() => $violation->getMessage(),
+                ];
+            }, iterator_to_array($errors))
+        ], 422);
+    }
 }