public function newLog($introId,$user)
    {
        $introClass = $this->config['intro_class'];
        $em = $this->doctrine->getManager();
        $intro = $em->getRepository($introClass)->find($introId);
        $introLog = null;
        if($intro){
            $introLogClass = $this->config['intro_log_class'];
            $introLog = new $introLogClass();
            $introLog->setIntro($intro);
            $introLog->setUser($user);
        }
        return $introLog;
    }