thinkphp6.x批量更新示例代码

<?php
namespace app\admin\controller;
use app\admin\model\Area as areaModel;
use think\facade\Db;

class Abc extends Base{
    public function index(){
        $areaList = array(); $rootDomain = 'df81.com';
        // 其中id为主键
        $cityList = Db::name('area')->where('is_domain',1)->where('lang',$default_lang)->field('id,urlroute,bind_domain')->select();
        foreach($cityList as $cityRs){
            $areaList[] = array('id'=>$cityRs['id'],'bind_domain'=>$cityRs['urlroute'].'.'.$rootDomain);
        }
        if(!empty($areaList)){
           $areaModule = new areaModel;
           $areaModule->saveAll($areaList);
        }
    
    }
}