Session Expire Symfony 2 Ajax

Question

My application uses ajax to request data. I'm using Symfony2, and when the session expires and I make a request with ajax, the login form is shown inside the main area on my application, and not as another view as should be. How can solve this problem. Thanks

Answer 1

I would suggest creating event listener which will be listening for every request:

services.yml:

your_request_listener:
    class: Acme\AppBundle\EventListener\RequestListener
    arguments: [@security.token_storage]
    tags:
        - { name: kernel.event_listener, event: kernel.request, method: onRequest }

In this event listener I would check for type of request so this would be only Ajax request listener. When request is ajax type then I would check if session has expired - if so, I would create response which will be valid response for ajax request (i.e. JsonResponse) and set this response to be sent to user.

class RequestListener
{
    private $tokenStorage;

    public function __construct(TokenStorageInterface $tokenStorage)
    {
        $this->tokenStorage = $tokenStorage;
    }

    public function onRequest(GetResponseEvent $event)
    {
        $request = $event->getRequest();
        if (!$request->isXmlHttpRequest()) {
            return; //we dismiss requests other than ajax
        }

        //now you check if user is authenticated/session expired/whatever you need
        $token = $this->tokenStorage->getToken();
        if ($token === null) {
            //now you create response which you would expect in your js doing ajax, for example JsonResponse
            $response = new JsonResponse(); //you should give some content here
            $event->setResponse($response); //now you override response which will be sent to user
        }

    }
}