/**
  * @param string                  $class
  * @param ManagerRegistry         $registry
  */
 public function __construct($class, ManagerRegistry $registry, SecurityContext $securityContext)
 {
     parent::__construct($class, $registry);
     $this->user = $securityContext->getToken()->getUser();
     if ($this->user) {
         $this->userId = $this->user->getId();
     } else {
         $this->userId = 0;
     }
     $this->categories = array();
 }