If you stay too long on one form or get away from your computer, and then go back to fill it in - you may get a TokenMismatchException, because the CSRF token won't be the same. It kinda makes sense, but the problem I recently discovered that it does the same for logout (which is also a form). And that's pretty silly, so how to avoid it?
Basically, if you do nothing on the page for a few hours and then click logout, you may see something like this:
To avoid this, we may add exceptions for the URLs that we don't want to have CSRF protection. There's a special array for that - in app/Http/Middleware/VerifyCsrfToken.php:
class VerifyCsrfToken extends Middleware
{
/**
* The URIs that should be excluded from CSRF verification.
*
* @var array
*/
protected $except = [
//
];
}
So what we should do, is add logout into this array:
protected $except = [
'/logout'
];
You can add more URLs here, if you wish, but be careful - CSRF protection is quite an important thing.
