[HttpKernel] Add a controller argument resolver for backed enums

Author: ogizanagi

DependencyInjection/FrameworkExtension.php

@@ -79,6 +79,7 @@
 use Symfony\Component\HttpKernel\Attribute\AsController;
 use Symfony\Component\HttpKernel\CacheClearer\CacheClearerInterface;
 use Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerInterface;
+use Symfony\Component\HttpKernel\Controller\ArgumentResolver\BackedEnumValueResolver;
 use Symfony\Component\HttpKernel\Controller\ArgumentValueResolverInterface;
 use Symfony\Component\HttpKernel\DataCollector\DataCollectorInterface;
 use Symfony\Component\HttpKernel\DependencyInjection\Extension;
@@ -238,6 +239,11 @@ public function load(array $configs, ContainerBuilder $container)
         $loader = new PhpFileLoader($container, new FileLocator(\dirname(__DIR__).'/Resources/config'));
 
         $loader->load('web.php');
+
+        if (\PHP_VERSION_ID < 80100 || !class_exists(BackedEnumValueResolver::class)) {
+            $container->removeDefinition('argument_resolver.backed_enum_resolver');
+        }
+
         $loader->load('services.php');
         $loader->load('fragment_renderer.php');
         $loader->load('error_renderer.php');

Resources/config/web.php

@@ -13,6 +13,7 @@
 
 use Symfony\Bundle\FrameworkBundle\Controller\ControllerResolver;
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver;
+use Symfony\Component\HttpKernel\Controller\ArgumentResolver\BackedEnumValueResolver;
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver\DefaultValueResolver;
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestAttributeValueResolver;
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestValueResolver;
@@ -45,6 +46,11 @@
                 abstract_arg('argument value resolvers'),
             ])
 
+        ->set('argument_resolver.backed_enum_resolver', BackedEnumValueResolver::class)
+            ->tag('controller.argument_value_resolver', [
+                'priority' => 105, // prior to the RequestAttributeValueResolver
+            ])
+
         ->set('argument_resolver.request_attribute', RequestAttributeValueResolver::class)
             ->tag('controller.argument_value_resolver', ['priority' => 100])