- Calls twig's render
- Stores a page in cache, if needed
- Store template (partials) in cache, if needed
- Fetches pages or template (partials) from cache
/**
* Render the not found page if on frontend and http exception
*
* @param GetResponseForExceptionEvent $event
*/
public function onKernelException(GetResponseForExceptionEvent $event)
{
$exception = $event->getException();
if (!$exception instanceof HttpExceptionInterface || Zone::isBackend($event->getRequest())) {
return;
}
if ($exception->getStatusCode() !== Response::HTTP_NOT_FOUND) {
return;
}
// If $notFoundPage is referencing a template, render it and be done.
if ($this->render->hasTemplate($this->notFoundPage)) {
try {
$this->renderNotFound($event, $this->notFoundPage, []);
} catch (TwigErrorLoader $e) {
// Template not found, fall though to see if we can render a
// record, failing that let the exception handler take over
}
}
// Next try for referencing DB content.
$content = $this->storage->getContent($this->notFoundPage, ['returnsingle' => true]);
if (!$content instanceof Content || empty($content->id)) {
return;
}
$template = $this->templateChooser->record($content);
$this->renderNotFound($event, $template, $content->getTemplateContext());
}
/**
* Callback for reponse event.
*
* @param FilterResponseEvent $event
*/
public function onResponse(FilterResponseEvent $event)
{
if (!$event->isMasterRequest()) {
return;
}
$response = $event->getResponse();
if (strpos($response->headers->get('Content-Type'), 'text/html') === false) {
return;
}
$this->addSnippets();
$response->setContent($this->render->postProcess($response));
}
/**
* Render the not found page if on frontend and http exception
*
* @param GetResponseForExceptionEvent $event
*/
public function onKernelException(GetResponseForExceptionEvent $event)
{
if (!$event->getException() instanceof HttpExceptionInterface || Zone::isBackend($event->getRequest())) {
return;
}
$content = $this->storage->getContent($this->notFoundPage, ['returnsingle' => true]);
if (!$content instanceof Content || empty($content->id)) {
return;
}
$template = $this->templateChooser->record($content);
$response = $this->render->render($template, $content->getTemplateContext());
$event->setResponse($response);
}
/**
* Handle errors thrown in the application.
*
* @param GetResponseForExceptionEvent $event
*/
public function onKernelException(GetResponseForExceptionEvent $event)
{
$exception = $event->getException();
// Log the error message
$message = $exception->getMessage();
$this->logger->critical($message, ['event' => 'exception', 'exception' => $exception]);
if ($exception instanceof HttpExceptionInterface && !Zone::isBackend($event->getRequest())) {
$message = "The page could not be found, and there is no 'notfound' set in 'config.yml'. Sorry about that.";
}
$context = ['class' => get_class($exception), 'message' => $message, 'code' => $exception->getCode(), 'trace' => $this->getSafeTrace($exception)];
// Note: This uses the template from app/theme_defaults. Not app/view/twig.
$response = $this->render->render('error.twig', ['context' => $context]);
$event->setResponse($response);
}
/**
* Callback for reponse event.
*
* @param FilterResponseEvent $event
*/
public function onResponse(FilterResponseEvent $event)
{
if (!$event->isMasterRequest()) {
return;
}
$request = $event->getRequest();
if (Zone::isAsync($request)) {
return;
}
$response = $event->getResponse();
if (strpos($response->headers->get('Content-Type'), 'text/html') === false) {
return;
}
if (!$event->getRequest()->isXmlHttpRequest()) {
$this->addSnippets();
}
$this->render->postProcess($request, $response);
}
/**
* Insert a snippet of Javascript to fetch the actual widget's contents.
*
* @param WidgetAssetInterface $widget
* @param Response $response
*/
protected function addDeferredJavaScript(WidgetAssetInterface $widget, Response $response)
{
if ($this->deferAdded) {
return;
}
$javaScript = $this->render->render('widgetjavascript.twig', ['widget' => $widget]);
$snippet = (new Snippet())->setLocation(Target::AFTER_BODY_JS)->setCallback((string) $javaScript);
$this->deferAdded = true;
$this->injector->inject($snippet, Target::AFTER_BODY_JS, $response);
}
/**
* Render the not found page if on frontend and http exception
*
* @param GetResponseForExceptionEvent $event
*/
public function onKernelException(GetResponseForExceptionEvent $event)
{
if (!$event->getException() instanceof HttpExceptionInterface || Zone::isBackend($event->getRequest())) {
return;
}
// If $notFoundPage is referencing a template, render it and be done.
if ($this->render->hasTemplate($this->notFoundPage)) {
$response = $this->render->render($this->notFoundPage);
$event->setResponse($response);
return;
}
// Next try for referencing DB content.
$content = $this->storage->getContent($this->notFoundPage, ['returnsingle' => true]);
if (!$content instanceof Content || empty($content->id)) {
return;
}
$template = $this->templateChooser->record($content);
$response = $this->render->render($template, [], $content->getTemplateContext());
$event->setResponse($response);
}