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<?php |
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namespace Drupal\controller_annotations\EventSubscriber; |
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use Doctrine\Common\Annotations\Reader; |
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use Doctrine\Common\Util\ClassUtils; |
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use Drupal\controller_annotations\Configuration\ConfigurationInterface; |
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use Drupal\controller_annotations\Configuration\ConfigurationLoader; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Symfony\Component\HttpKernel\Event\FilterControllerEvent; |
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use Symfony\Component\HttpKernel\KernelEvents; |
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class ControllerEventSubscriber implements EventSubscriberInterface |
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{ |
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/** |
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* @var Reader |
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*/ |
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protected $reader; |
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/** |
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* Constructor. |
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* |
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* @param Reader $reader An Reader instance |
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*/ |
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public function __construct(Reader $reader) |
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{ |
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$this->reader = $reader; |
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ConfigurationLoader::load(); |
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} |
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/** |
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* Modifies the Request object to apply configuration information found in |
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* controllers annotations like the template to render or HTTP caching |
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* configuration. |
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* |
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* @param FilterControllerEvent $event A FilterControllerEvent instance |
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*/ |
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public function onKernelController(FilterControllerEvent $event) |
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{ |
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$controller = $event->getController(); |
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if (!is_array($controller) && method_exists($controller, '__invoke')) { |
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$controller = array($controller, '__invoke'); |
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} |
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if (!is_array($controller)) { |
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return; |
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} |
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$className = class_exists('Doctrine\Common\Util\ClassUtils') ? ClassUtils::getClass($controller[0]) : get_class($controller[0]); |
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$object = new \ReflectionClass($className); |
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$method = $object->getMethod($controller[1]); |
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$classConfigurations = $this->getConfigurations($this->reader->getClassAnnotations($object)); |
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$methodConfigurations = $this->getConfigurations($this->reader->getMethodAnnotations($method)); |
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$configurations = array(); |
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foreach (array_merge(array_keys($classConfigurations), array_keys($methodConfigurations)) as $key) { |
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if (!array_key_exists($key, $classConfigurations)) { |
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$configurations[$key] = $methodConfigurations[$key]; |
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} elseif (!array_key_exists($key, $methodConfigurations)) { |
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$configurations[$key] = $classConfigurations[$key]; |
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} else { |
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if (is_array($classConfigurations[$key])) { |
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if (!is_array($methodConfigurations[$key])) { |
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throw new \UnexpectedValueException('Configurations should both be an array or both not be an array'); |
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} |
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$configurations[$key] = array_merge($classConfigurations[$key], $methodConfigurations[$key]); |
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} else { |
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// method configuration overrides class configuration |
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$configurations[$key] = $methodConfigurations[$key]; |
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} |
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} |
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} |
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$request = $event->getRequest(); |
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foreach ($configurations as $key => $attributes) { |
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$request->attributes->set($key, $attributes); |
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} |
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} |
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protected function getConfigurations(array $annotations) |
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{ |
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$configurations = []; |
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foreach ($annotations as $configuration) { |
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if ($configuration instanceof ConfigurationInterface) { |
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if ($configuration->allowArray()) { |
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$configurations['_'.$configuration->getAliasName()][] = $configuration; |
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} elseif (!isset($configurations['_'.$configuration->getAliasName()])) { |
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$configurations['_'.$configuration->getAliasName()] = $configuration; |
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} else { |
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throw new \LogicException(sprintf('Multiple "%s" annotations are not allowed.', $configuration->getAliasName())); |
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} |
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} |
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} |
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return $configurations; |
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} |
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/** |
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* @return array |
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*/ |
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public static function getSubscribedEvents() |
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{ |
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return [ |
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KernelEvents::CONTROLLER => [ |
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['onKernelController', 100], |
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] |
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]; |
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} |
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} |
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