<?php
/*
* This file is part of the Symfony framework.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
namespace Sensio\Bundle\FrameworkExtraBundle\EventListener;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;
use Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\ParamConverterManager;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Event\FilterControllerEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
/**
* The ParamConverterListener handles the ParamConverter annotation.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class ParamConverterListener implements EventSubscriberInterface
{
/**
* @var ParamConverterManager
*/
protected $manager;
protected $autoConvert;
/**
* @var bool
*/
private $isParameterTypeSupported;
/**
* Constructor.
*
* @param ParamConverterManager $manager A ParamConverterManager instance
* @param bool $autoConvert Auto convert non-configured objects
*/
public function __construct(ParamConverterManager $manager, $autoConvert = true)
{
$this->manager = $manager;
$this->autoConvert = $autoConvert;
$this->isParameterTypeSupported = method_exists('ReflectionParameter', 'getType');
}
/**
* Modifies the ParamConverterManager instance.
*
* @param FilterControllerEvent $event A FilterControllerEvent instance
*/
public function onKernelController(FilterControllerEvent $event)
{
$controller = $event->getController();
$request = $event->getRequest();
$configurations = array();
if ($configuration = $request->attributes->get('_converters')) {
foreach (is_array($configuration) ? $configuration : array($configuration) as $configuration) {
$configurations[$configuration->getName()] = $configuration;
}
}
if (is_array($controller)) {
$r = new \ReflectionMethod($controller[0], $controller[1]);
} elseif (is_object($controller) && is_callable($controller, '__invoke')) {
$r = new \ReflectionMethod($controller, '__invoke');
} else {
$r = new \ReflectionFunction($controller);
}
// automatically apply conversion for non-configured objects
if ($this->autoConvert) {
$configurations = $this->autoConfigure($r, $request, $configurations);
}
$this->manager->apply($request, $configurations);
}
private function autoConfigure(\ReflectionFunctionAbstract $r, Request $request, $configurations)
{
foreach ($r->getParameters() as $param) {
if ($param->getClass() && $param->getClass()->isInstance($request)) {
continue;
}
$name = $param->getName();
$class = $param->getClass();
$hasType = $this->isParameterTypeSupported && $param->hasType();
if ($class || $hasType) {
if (!isset($configurations[$name])) {
$configuration = new ParamConverter(array());
$configuration->setName($name);
$configurations[$name] = $configuration;
}
if ($class && null === $configurations[$name]->getClass()) {
$configurations[$name]->setClass($class->getName());
}
}
if (isset($configurations[$name])) {
$configurations[$name]->setIsOptional($param->isOptional() || $param->isDefaultValueAvailable() || $hasType && $param->getType()->allowsNull());
}
}
return $configurations;
}
/**
* Get subscribed events.
*
* @return array Subscribed events
*/
public static function getSubscribedEvents()
{
return array(
KernelEvents::CONTROLLER => 'onKernelController',
);
}
}