Added ConstraintAttributeListener

symfony · artyuum · Aug 28, 2022 · Aug 29, 2022 · Aug 29, 2022 · Aug 29, 2022
commit 55ecfec3e6a989b7b2a7388f36ac8cac5aa7e891
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/validator.php b/src/Symfony/Bundle/FrameworkBundle/Resources/config/validator.php
@@ -18,6 +18,7 @@
 use Symfony\Component\Validator\Constraints\ExpressionValidator;
 use Symfony\Component\Validator\Constraints\NotCompromisedPasswordValidator;
 use Symfony\Component\Validator\ContainerConstraintValidatorFactory;
+use Symfony\Component\Validator\EventListener\ConstraintAttributeListener;
 use Symfony\Component\Validator\Mapping\Loader\PropertyInfoLoader;
 use Symfony\Component\Validator\Validation;
 use Symfony\Component\Validator\Validator\ValidatorInterface;
@@ -102,5 +103,11 @@
                service('property_info'),
            ])
            ->tag('validator.auto_mapper')
+
+        ->set('controller.is_granted_attribute_listener', ConstraintAttributeListener::class)
+            ->args([
+                service('validator'),
+            ])
+            ->tag('kernel.event_subscriber')
    ;
 };
diff --git a/src/Symfony/Component/Validator/EventListener/ConstraintAttributeListener.php b/src/Symfony/Component/Validator/EventListener/ConstraintAttributeListener.php
@@ -0,0 +1,69 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\EventListener;
+
+use Symfony\Component\HttpKernel\Event\ControllerArgumentsEvent;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\Exception\ValidationFailedException;
+use Symfony\Component\Validator\Validator\ValidatorInterface;
+
+/**
+ * Handles the validator constraint attributes on controller's arguments.
+ *
+ * @author Dynèsh Hassanaly <artyum@protonmail.com>
+ */
+class ConstraintAttributeListener
+{
+    public function __construct(private readonly ValidatorInterface $validator) {
+    }
+
+    private function getReflectionMethod(callable $controller): \ReflectionMethod
+    {
+        if (is_array($controller)) {
+            $class = $controller[0];
+            $method = $controller[1];
+        } else {
+            /** @var object $controller */
+            $class = $controller;
+            $method = '__invoke';
+        }
+
+        return new \ReflectionMethod($class, $method);
+    }
+
+    public function onKernelControllerArguments(ControllerArgumentsEvent $event): void
+    {
+        $controller = $event->getController();
+        $arguments = $event->getArguments();
+        $reflectionMethod = $this->getReflectionMethod($controller);
+
+        foreach ($reflectionMethod->getParameters() as $index => $reflectionParameter) {
+            $reflectionAttributes = $reflectionParameter->getAttributes(Constraint::class, \ReflectionAttribute::IS_INSTANCEOF);
+
+            if (!$reflectionAttributes) {
+                continue;
+            }
+
+            foreach ($reflectionAttributes as $reflectionAttribute) {
+                /** @var Constraint $constraint */
+                $constraint = $reflectionAttribute->newInstance();
+                $value = $arguments[$index];
+
+                $violations = $this->validator->validate($value, $constraint);
+
+                if ($violations->count() > 0) {
+                    throw new ValidationFailedException($value, $violations);
+                }
+            }
+        }
+    }
+}