获取无限级别分类

    private function _getson($uid){

        $sonlists = Db::name('user')
                ->where(['ruid' => $uid])
                ->order('id desc')
                ->field('id,ruid,top_uid,nickname,telphone')
                ->select();

        if ($sonlists)
        {
            foreach ($sonlists as $k => &$v)
            {
                $data = $this->_getson($v['id']);
                if ($data){
                    $v['children'] = $data;
                }
            }
        }

        return $sonlists;

    }



    public function family()
    {

        $info = Db::name('user')
                ->where(['id' => $_GET['top_uid']])
                ->order('id desc')
                ->field('id,ruid,top_uid,nickname,telphone')
                ->find();
        $info['children'] = $this->_getson($_GET['top_uid']);
        dump($info);
        exit;
//        $this->assign('info', $info);
//        return $this->fetch();

    }