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- <?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;
- use Symfony\Component\HttpFoundation\Request;
- use Symfony\Component\HttpKernel\Controller\ArgumentResolver\DefaultValueResolver;
- use Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestAttributeValueResolver;
- use Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestValueResolver;
- use Symfony\Component\HttpKernel\Controller\ArgumentResolver\SessionValueResolver;
- use Symfony\Component\HttpKernel\Controller\ArgumentResolver\VariadicValueResolver;
- use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadataFactory;
- use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadataFactoryInterface;
- /**
- * Responsible for resolving the arguments passed to an action.
- *
- * @author Iltar van der Berg <kjarli@gmail.com>
- */
- final class ArgumentResolver implements ArgumentResolverInterface
- {
- private $argumentMetadataFactory;
- /**
- * @var iterable|ArgumentValueResolverInterface[]
- */
- private $argumentValueResolvers;
- public function __construct(ArgumentMetadataFactoryInterface $argumentMetadataFactory = null, $argumentValueResolvers = array())
- {
- $this->argumentMetadataFactory = $argumentMetadataFactory ?: new ArgumentMetadataFactory();
- $this->argumentValueResolvers = $argumentValueResolvers ?: self::getDefaultArgumentValueResolvers();
- }
- /**
- * {@inheritdoc}
- */
- public function getArguments(Request $request, $controller)
- {
- $arguments = array();
- foreach ($this->argumentMetadataFactory->createArgumentMetadata($controller) as $metadata) {
- foreach ($this->argumentValueResolvers as $resolver) {
- if (!$resolver->supports($request, $metadata)) {
- continue;
- }
- $resolved = $resolver->resolve($request, $metadata);
- if (!$resolved instanceof \Generator) {
- throw new \InvalidArgumentException(sprintf('%s::resolve() must yield at least one value.', get_class($resolver)));
- }
- foreach ($resolved as $append) {
- $arguments[] = $append;
- }
- // continue to the next controller argument
- continue 2;
- }
- $representative = $controller;
- if (is_array($representative)) {
- $representative = sprintf('%s::%s()', get_class($representative[0]), $representative[1]);
- } elseif (is_object($representative)) {
- $representative = get_class($representative);
- }
- throw new \RuntimeException(sprintf('Controller "%s" requires that you provide a value for the "$%s" argument. Either the argument is nullable and no null value has been provided, no default value has been provided or because there is a non optional argument after this one.', $representative, $metadata->getName()));
- }
- return $arguments;
- }
- public static function getDefaultArgumentValueResolvers()
- {
- return array(
- new RequestAttributeValueResolver(),
- new RequestValueResolver(),
- new SessionValueResolver(),
- new DefaultValueResolver(),
- new VariadicValueResolver(),
- );
- }
- }
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