fix(serializer): json violation list normalizer

features/main/validation.feature

@@ -157,3 +157,34 @@ Feature: Using validations groups
       ]
     }
     """
+
+  @!mongodb
+  Scenario: Get violations constraints
+    When I add "Accept" header equal to "application/json"
+    And I add "Content-Type" header equal to "application/json"
+    And I send a "POST" request to "/issue5912s" with body:
+    """
+    {
+      "title": ""
+    }
+    """
+    Then the response status code should be 422
+    And the response should be in JSON
+    And the JSON should be equal to:
+    """
+    {
+      "status": 422,
+      "violations": [
+        {
+          "propertyPath": "title",
+          "message": "This value should not be blank.",
+          "code": "c1051bb4-d103-4f74-8988-acbcafc7fdc3"
+        }
+      ],
+      "detail": "title: This value should not be blank.",
+      "type": "/validation_errors/c1051bb4-d103-4f74-8988-acbcafc7fdc3",
+      "title": "An error occurred"
+    }
+    """
+    And the header "Content-Type" should be equal to "application/problem+json; charset=utf-8"
+

src/Symfony/Bundle/Resources/config/symfony/validator.xml

@@ -31,6 +31,14 @@
 
             <tag name="serializer.normalizer" priority="-800" />
         </service>
+
+        <service id="api_platform.serializer.normalizer.constraint_violation_list" class="ApiPlatform\Symfony\Validator\Serializer\ConstraintViolationListNormalizer" public="false">
+            <argument>%api_platform.validator.serialize_payload_fields%</argument>
+            <argument type="service" id="api_platform.name_converter" on-invalid="ignore" />
+
+            <!-- serializer.normalizer.constraint_violation_list is at 915  -->
+            <tag name="serializer.normalizer" priority="-900" />
+        </service>
     </services>
 
 </container>

src/Symfony/Validator/Exception/ValidationException.php

@@ -19,6 +19,7 @@
 use ApiPlatform\Metadata\Exception\ProblemExceptionInterface;
 use ApiPlatform\Metadata\Util\CompositeIdentifierParser;
 use ApiPlatform\Validator\Exception\ValidationException as BaseValidationException;
+use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
 use Symfony\Component\Serializer\Annotation\Groups;
 use Symfony\Component\Serializer\Annotation\SerializedName;
 use Symfony\Component\Validator\ConstraintViolationListInterface;
@@ -50,7 +51,7 @@
     ],
     graphQlOperations: []
 )]
-final class ValidationException extends BaseValidationException implements ConstraintViolationListAwareExceptionInterface, \Stringable, ProblemExceptionInterface
+final class ValidationException extends BaseValidationException implements ConstraintViolationListAwareExceptionInterface, \Stringable, ProblemExceptionInterface, HttpExceptionInterface
 {
     private int $status = 422;
 
@@ -154,4 +155,14 @@ public function __toString(): string
 
         return $message;
     }
+
+    public function getStatusCode(): int
+    {
+        return $this->status;
+    }
+
+    public function getHeaders(): array
+    {
+        return [];
+    }
 }

src/Symfony/Validator/Serializer/ConstraintViolationListNormalizer.php

@@ -0,0 +1,44 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Symfony\Validator\Serializer;
+
+use ApiPlatform\Serializer\AbstractConstraintViolationListNormalizer;
+use Symfony\Component\Serializer\NameConverter\NameConverterInterface;
+
+/**
+ * Converts {@see \Symfony\Component\Validator\ConstraintViolationListInterface} the API Problem spec (RFC 7807).
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+final class ConstraintViolationListNormalizer extends AbstractConstraintViolationListNormalizer
+{
+    public const FORMAT = 'json';
+
+    private array $defaultContext = [];
+
+    public function __construct(array $serializePayloadFields = null, NameConverterInterface $nameConverter = null, array $defaultContext = [])
+    {
+        parent::__construct($serializePayloadFields, $nameConverter);
+
+        $this->defaultContext = array_merge($this->defaultContext, $defaultContext);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function normalize(mixed $object, string $format = null, array $context = []): array
+    {
+        return $this->getViolations($object);
+    }
+}

tests/Fixtures/TestBundle/Entity/Issue5912/Dummy.php

@@ -0,0 +1,32 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Tests\Fixtures\TestBundle\Entity\Issue5912;
+
+use ApiPlatform\Metadata\ApiResource;
+use ApiPlatform\Metadata\NotExposed;
+use ApiPlatform\Metadata\Post;
+use Symfony\Component\Validator\Constraints\NotBlank;
+
+#[ApiResource(
+    shortName: 'Issue5912',
+    operations: [
+        new NotExposed(),
+        new Post(),
+    ]
+)]
+class Dummy
+{
+    #[NotBlank]
+    public string $title;
+}