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@fabpot fabpot
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<?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 Doctrine\Common\Annotations\Reader;
use Symfony\Component\HttpKernel\Event\FilterControllerEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\ConfigurationInterface;
use Doctrine\Common\Util\ClassUtils;
/**
* The ControllerListener class parses annotation blocks located in
* controller classes.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class ControllerListener implements EventSubscriberInterface
{
/**
* @var Reader
*/
protected $reader;
/**
* Constructor.
*
* @param Reader $reader An Reader instance
*/
public function __construct(Reader $reader)
{
$this->reader = $reader;
}
/**
* Modifies the Request object to apply configuration information found in
* controllers annotations like the template to render or HTTP caching
* configuration.
*
* @param FilterControllerEvent $event A FilterControllerEvent instance
*/
public function onKernelController(FilterControllerEvent $event)
{
if (!is_array($controller = $event->getController())) {
return;
}
$className = class_exists('Doctrine\Common\Util\ClassUtils') ? ClassUtils::getClass($controller[0]) : get_class($controller[0]);
$object = new \ReflectionClass($className);
$method = $object->getMethod($controller[1]);
$classConfigurations = $this->getConfigurations($this->reader->getClassAnnotations($object));
$methodConfigurations = $this->getConfigurations($this->reader->getMethodAnnotations($method));
$configurations = array();
foreach (array_merge(array_keys($classConfigurations), array_keys($methodConfigurations)) as $key) {
if (!array_key_exists($key, $classConfigurations)) {
$configurations[$key] = $methodConfigurations[$key];
} elseif (!array_key_exists($key, $methodConfigurations)) {
$configurations[$key] = $classConfigurations[$key];
} else {
if (is_array($classConfigurations[$key])) {
if (!is_array($methodConfigurations[$key])) {
throw new \UnexpectedValueException('Configurations should both be an array or both not be an array');
}
$configurations[$key] = array_merge($classConfigurations[$key], $methodConfigurations[$key]);
} else {
// method configuration overrides class configuration
$configurations[$key] = $methodConfigurations[$key];
}
}
}
$request = $event->getRequest();
foreach ($configurations as $key => $attributes) {
$request->attributes->set($key, $attributes);
}
}
protected function getConfigurations(array $annotations)
{
$configurations = array();
foreach ($annotations as $configuration) {
if ($configuration instanceof ConfigurationInterface) {
if ($configuration->allowArray()) {
$configurations['_'.$configuration->getAliasName()][] = $configuration;
} else {
$configurations['_'.$configuration->getAliasName()] = $configuration;
}
}
}
return $configurations;
}
public static function getSubscribedEvents()
{
return array(
KernelEvents::CONTROLLER => 'onKernelController',
);
}
}
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