/**
* Handle exceptions that occur during the request handling process.
*
* @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
*
* @throws \Exception|\Symfony\Component\HttpFoundation\File\Exception\FileNotFoundException|\Symfony\Component\HttpKernel\Exception\HttpException
* As a fallback behaviour only, if a sensible error page cannot be generated.
*/
public function onKernelException(GetResponseForExceptionEvent $event)
{
LoggerRegistry::debug('EngineExceptionListener performing handleException() on EXCEPTION event');
$exception = $event->getException();
try {
// Delete any buffered page content.
while (ob_get_level() > 1) {
ob_end_clean();
}
// Determine the status code to use for the error page (and which error page is displayed).
$statusCode = $exception instanceof HttpException ? $exception->getStatusCode() : ($exception instanceof FileNotFoundException ? 404 : 500);
// Set route and template attributes to error page defaults.
$event->getRequest()->attributes->add(array('_status' => $statusCode, '_route' => $this->getEngine()->getErrorRoute($statusCode), '_route_params' => array('exception' => $exception, 'statusCode' => $statusCode), '_template' => $this->getEngine()->getErrorTemplate()));
// Store the exception and status code in the top-level view data.
$page = $this->getEngine()->getViewFactory()->getPage();
$page['exception'] = $exception;
$page['status-code'] = $statusCode;
// Perform standard rendering using a proxy event.
$renderer = new EngineRendererListener($this->getEngine());
$viewScript = sprintf('error-%3d', $statusCode);
// TODO Handle view scripts that don't exist, default back to 500 or 404
$renderEvent = new GetResponseForControllerResultEvent($event->getKernel(), $event->getRequest(), HttpKernelInterface::SUB_REQUEST, $viewScript);
$renderer->onKernelView($renderEvent);
// Copy the response from the proxy event back to the event being handled.
$event->setResponse($renderEvent->getResponse());
} catch (\Exception $e) {
try {
// Delete any buffered page content.
while (ob_get_level() > 1) {
ob_end_clean();
}
// If there is an error above, try to display the fallback error page, i.e. black-and-white error
// message.
$event->setResponse(Response::create(HtmlUtilities::exception($exception, $this->getEngine()->getSiteInfo()->getAdministratorName(), $this->getEngine()->getSiteInfo()->getAdministratorEmail())));
} catch (\Exception $e2) {
// If another error occurs, the best thing to do is throw the original error.
throw $exception;
}
}
}
public function testExceptionWithAdminDetails()
{
$e = new \Exception('ERROR MESSAGE');
$this->assertStringMatchesFormat("%AName: Your Administrator%A", HtmlUtilities::exception($e, 'Your Administrator', '*****@*****.**'));
$this->assertStringMatchesFormat("%AEmail Address: admin@sitegear.org%A", HtmlUtilities::exception($e, 'Your Administrator', '*****@*****.**'));
}
/**
* See the documentation for __call() for details.
*
* @return string Rendered content.
*/
public function __toString()
{
try {
// Delegate to the render() method.
return $this->render();
} catch (\Exception $exception) {
// Throwing any Exception from __toString() is a fatal error (bravo, php, bra-vo) so we have no other
// choice but to catch any exception here and do something with it. Delete any buffered content and
// display a plain error page.
// TODO Make this a proper error-500 page but prevent feedback loops
while (ob_get_level() > 1) {
ob_end_clean();
}
return HtmlUtilities::exception($exception, $this->getEngine()->getSiteInfo()->getAdministratorName(), $this->getEngine()->getSiteInfo()->getAdministratorEmail());
}
}
