Symfony - Redirect user already logged in - symfony

Question

It's possibile with security file config to redirect user already logged in to specific route (e.g homepage) if they try to access on login/register pages? One solution that I already found is to attach a listener to EventRequest, but I prefer to use security config if it's possible.

Answer 1

After some googling I noticed that another solution is to override the fosuserbundle controllers. But because I need that this behavior should works also for /register and /resetting pages, instead to override also those controller, I preferred to use EventListener. Maybe this's the best solution in this case. I'm using Symfony 4, so for the other versions could be different.
My code:
namespace App\EventListener;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\Routing\RouterInterface;
use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
class LoggedInUserListener
{
private $router;
private $authChecker;
public function __construct(RouterInterface $router, AuthorizationCheckerInterface $authChecker)
{
$this->router = $router;
$this->authChecker = $authChecker;
}
/**
* Redirect user to homepage if tryes to access in anonymously path
* #param GetResponseEvent $event
*/
public function onKernelRequest(GetResponseEvent $event)
{
$request = $event->getRequest();
$path = $request->getPathInfo();
if ($this->authChecker->isGranted('IS_AUTHENTICATED_REMEMBERED') && $this->isAnonymouslyPath($path)) {
$response = new RedirectResponse($this->router->generate('homepage'));
$event->setResponse($response);
}
}
/**
* Check if $path is an anonymously path
* #param string $path
* #return bool
*/
private function isAnonymouslyPath(string $path): bool
{
return preg_match('/\/login|\/register|\/resetting/', $path) ? true : false;
}
}
add this to services.yaml:
App\EventListener\LoggedInUserListener:
tags:
- { name: kernel.event_listener, event: kernel.request }

Answer 2

#Mintendo, I have errors using your code:
request.CRITICAL: Exception thrown when handling an exception (Symfony\Component\Security\Core\Exception\AuthenticationCredentialsNotFoundException: The token storage contains no authentication token.
php.CRITICAL: Uncaught Exception: The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL.
Besides that debug bar also showed error and was broken.
But you pushed me in the right direction, so I have modified your code a little.
And it works without errors now:
<?php
namespace App\EventListener;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\Routing\RouterInterface;
use Symfony\Component\Security\Core\Security;
class LoggedInUserListener
{
private $router;
private $security;
public function __construct(RouterInterface $router, Security $security)
{
$this->router = $router;
$this->security = $security;
}
/**
* Redirect user to homepage if tries to access in anonymously path
* #param GetResponseEvent $event
*/
public function onKernelRequest(GetResponseEvent $event)
{
$request = $event->getRequest();
$path = $request->getPathInfo();
if ($this->security->getUser() && $this->isAnonymouslyPath($path)) {
$response = new RedirectResponse($this->router->generate('dashboard'));
$event->setResponse($response);
}
}
/**
* Check if $path is an anonymously path
* #param string $path
* #return bool
*/
private function isAnonymouslyPath(string $path): bool
{
return preg_match('/\/login|\/register|\/resetting/', $path) ? true : false;
}
}