jili2/application/admin/controller/Test.php

<?php
namespace app\admin\controller;

use app\common\util\ExcelUtil;
use think\Db;

class Test extends Auth
{
    public function index(){
       $data =  Db::name('device_record')
                ->alias('dr')
                ->join('device d', 'd.id=dr.device_id')
                ->field('dr.*,d.title as device_name,d.content as device_details')
                ->where('dr.org_id',$this->orgId)
                ->where('cate_id','in',[22,23])
                ->order('dr.id desc')
                ->limit(30)
                ->select();

        foreach ($data as $k=>$v){
            $img = explode(',',$v['images']);
            if($img){
                $data[$k]['images'] = $img[0];
            }
        }
        halt($data);
        HelpHander::success($data);
    }

}