class DUsersPrivileges {

    private $_user = new DUserRecord();
    private $_privilege = new DPrivilegeRecord();

    public $user_id;
    public $privilege_id;
    public $status;

    public

    function getUser() {
        if ($_user === null) {
            $_user = DUserRecord::finder()->findByPk($this->user_id);
        } else {
            return $this->$_user;
        }
    }

    }