<?php
/**
* Pimcore
*
* This source file is available under two different licenses:
* - GNU General Public License version 3 (GPLv3)
* - Pimcore Enterprise License (PEL)
* Full copyright and license information is available in
* LICENSE.md which is distributed with this source code.
*
* @copyright Copyright (c) Pimcore GmbH (http://www.pimcore.org)
* @license http://www.pimcore.org/license GPLv3 and PEL
*/
namespace Pimcore\Bundle\CoreBundle\EventListener;
use Pimcore\Http\Request\Resolver\ViewModelResolver;
use Pimcore\Templating\Model\ViewModelInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent;
use Symfony\Component\HttpKernel\KernelEvents;
class ControllerViewModelListener implements EventSubscriberInterface
{
/**
* @var ViewModelResolver
*/
protected $viewModelResolver;
/**
* @param ViewModelResolver $viewModelResolver
*/
public function __construct(ViewModelResolver $viewModelResolver)
{
$this->viewModelResolver = $viewModelResolver;
}
/**
* @inheritDoc
*/
public static function getSubscribedEvents()
{
return [
// set a higher priority to make this run before the @Template annotation
// handler kicks in (SensioFrameworkExtraBundle) to make sure the ViewModel
// is processed before template is rendered
KernelEvents::VIEW => ['onKernelView', 10]
];
}
/**
* When action uses the Template annotation, add ViewModel variables to the controller result
* before proceeding to render the template.
*
* @param GetResponseForControllerResultEvent $event
*/
public function onKernelView(GetResponseForControllerResultEvent $event)
{
$request = $event->getRequest();
// only alter requests with a @Template annotation
$template = $request->attributes->get('_template');
if (null === $template) {
return;
}
$result = $event->getControllerResult();
// controller returned a ViewModel instance -> transform the model to array and return
if ($result instanceof ViewModelInterface) {
$event->setControllerResult($result->getParameters()->all());
return;
}
// view model is empty -> nothing to do
$view = $this->viewModelResolver->getViewModel($event->getRequest());
if (null === $view || $view->count() === 0) {
return;
}
if (null === $result) {
// empty result -> add view model params
$event->setControllerResult($view->getParameters()->all());
} else {
// add missing view model params to result
if (is_array($result)) {
$result = array_replace($view->getParameters()->all(), $result);
$event->setControllerResult($result);
}
}
}
}