Thinkphp查询数据转成layui的展示格式

//执行查询获取所需要到三个字段的值[等同于select host_id,address,alias from icinga_hosts]
 $select = Db::table('icinga_hosts')->field(['host_id','address','alias'])->select();
        if($select->isEmpty()){
            echo '未找到数据';
            exit();
        }else{
            $datas = array();
      $datas['code'] = 0;
            $datas['msg'] = 'ok';
            $datas['count'] = 10;
            $datas['data'] = $select;
            echo json_encode($datas); 
            $title = '主题名';
            $login = '登录人';
            //传递参数给前端
            View::assign([
                'title'  => $title,
                'login' => $login,dddd
                'table_data' => $datas
             ]);
        return View::fetch();
}

layui格式如下

{
  "code":0,
  "msg":"ok",
  "count":2,
  "data":
    [
        {"host_id":3,"address":"127.0.0.1","alias":"linux-host"},
        {"host_id":4,"address":"127.0.0.1","alias":"localhost"}
    ]
}