cxinv/app/admin/model/ReportCode.php

<?php
declare (strict_types = 1);

namespace app\admin\model;

use think\Model;

/**
 * @mixin \think\Model
 */
class ReportCode extends Model
{

    public  function setField($filed,$vale){
        $arr= explode(",",$this->$filed);
       if(!in_array($vale,$arr)) $this->$filed == '' ? $this->$filed =$vale : $this->$filed .=",".$vale;
    }
    public function rmField($filed,$vale){
          $arr= explode(",",$this->$filed);
          if(in_array($vale,$arr)){
            $key = array_search($vale,$arr);
            unset($arr[$key]);
          }
         $this->$filed=implode(",",$arr);
    }
    public function __destruct(){
      $this->save();
    }
}