expiration of a role Symfony - php

Question

You can subscribe on my website. I use FOSUserBundle.
When the user subscribes, he won the role ROLE_SUBSCRIBER giving it access to new page.
I would like this role expires after a period that I recorded in the User entity.
class User extends BaseUser
{
// ...
* #ORM\Column(type="datetime")
protected $subscribeExpiration;
public function setSubscribeExpiration(\DateTime $subscribeExpiration) {
$this->subscribeExpiration = clone $subscribeExpiration;
return $this;
}
public function getSubscribeExpiration() {
return $this->subscribeExpiration;
}
// ...
}

Answer 1

Don't use a ROLE, but a Voter.
Then, in your voter check for the expireDate to decide if the user is a subsciber or not :
// src/AppBundle/Security/PostVoter.php
namespace AppBundle\Security;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Authorization\Voter\Voter;
use AppBundle\Entity\User;
class SubscriberVoter extends Voter
{
const IS_SUBSCRIBER = 'is_subscriber';
protected function supports($attribute, $subject)
{
if (!in_array($attribute, array(self::IS_SUBSCRIBER))) {
return false;
}
return true;
}
protected function voteOnAttribute($attribute, $subject, TokenInterface $token)
{
$user = $token->getUser();
if (!$user instanceof User) {
// the user must be logged in; if not, deny access
return false;
}
// you know $subject is a Post object, thanks to supports
/** #var Post $post */
$post = $subject;
switch ($attribute) {
case self::IS_SUBSCRIBER:
$expireDate = $user->getSubscriberExpireDate();
$currendDate = new \DateTime();
return (null !== $expireDate && $expireDate > $currendDate);
}
throw new \LogicException('This code should not be reached!');
}
}
To check this 'role' :
$this->isGranted('is_subscriber');