gistfile1.txt

<?php

namespace AppBundle\Security;

use .....

class UserData
{
    private $stack;
    ......

    public function __construct(.....)
    {
    .......
    }

    public function checkUser($username)
    {
        $user = $this->entityManager->getRepository('AppBundle:User')->findOneBy(['username' => $username]);
        
        if ($user) {
            $camp = $this->entityManager->getRepository('AppBundle:Campaigns')->findOneBy(['id' => $user->getTarget()]);
            if ($camp) {
                // redirect
               return $this->redirectResponse('facebook.com', 301);
            }
        }
        return true;
    }
}