RequestAttributeValueResolver.php

<?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\HttpKernel\Controller\ArgumentResolver;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Controller\ValueResolverInterface;
use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadata;

/**
 * Yields a non-variadic argument's value from the request attributes.
 *
 * @author Iltar van der Berg <kjarli@gmail.com>
 */
final class RequestAttributeValueResolver implements ValueResolverInterface {
    public function resolve(Request $request, ArgumentMetadata $argument) : array {
        return !$argument->isVariadic() && $request->attributes
            ->has($argument->getName()) ? [
            $request->attributes
                ->get($argument->getName()),
        ] : [];
    }

}