<?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\Bridge\Twig\EventListener;
use Symfony\Bridge\Twig\Attribute\Template;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\StreamedResponse;
use Symfony\Component\HttpKernel\Event\ControllerArgumentsEvent;
use Symfony\Component\HttpKernel\Event\ViewEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Twig\Environment;
class TemplateAttributeListener implements EventSubscriberInterface
{
public function __construct(
private Environment $twig,
) {
}
public function onKernelView(ViewEvent $event)
{
$parameters = $event->getControllerResult();
if (!\is_array($parameters ?? [])) {
return;
}
$attribute = $event->getRequest()->attributes->get('_template');
if (!$attribute instanceof Template && !$attribute = $event->controllerArgumentsEvent?->getAttributes()[Template::class][0] ?? null) {
return;
}
$parameters ??= $this->resolveParameters($event->controllerArgumentsEvent, $attribute->vars);
$status = 200;
foreach ($parameters as $k => $v) {
if (!$v instanceof FormInterface) {
continue;
}
if ($v->isSubmitted() && !$v->isValid()) {
$status = 422;
}
$parameters[$k] = $v->createView();
}
$event->setResponse($attribute->stream
? new StreamedResponse(fn () => $this->twig->display($attribute->template, $parameters), $status)
: new Response($this->twig->render($attribute->template, $parameters), $status)
);
}
public static function getSubscribedEvents(): array
{
return [
KernelEvents::VIEW => ['onKernelView', -128],
];
}
private function resolveParameters(ControllerArgumentsEvent $event, ?array $vars): array
{
if ([] === $vars) {
return [];
}
$parameters = $event->getNamedArguments();
if (null !== $vars) {
$parameters = array_intersect_key($parameters, array_flip($vars));
}
return $parameters;
}
}