public function onKernelException(GetResponseForExceptionEvent $event)
{
if (HttpKernelInterface::MASTER_REQUEST !== $event->getRequestType()) {
return;
}
$request = $event->getRequest();
if ('' !== rtrim($request->getPathInfo(), '/')) {
return;
}
$ex = $event->getException();
if (!$ex instanceof NotFoundHttpException || !$ex->getPrevious() instanceof ResourceNotFoundException) {
return;
}
$locale = $this->localeResolver->resolveLocale($request, $this->locales) ?: $this->defaultLocale;
$request->setLocale($locale);
$params = $request->query->all();
unset($params['hl']);
$response = new RedirectResponse($request->getBaseUrl() . '/' . $locale . '/' . ($params ? '?' . http_build_query($params) : ''));
$response->setPrivate();
$response->setMaxAge(0);
$response->setSharedMaxAge(0);
$response->headers->addCacheControlDirective('must-revalidate', true);
$response->headers->addCacheControlDirective('no-store', true);
$event->setResponse($response);
}