cxinv/app/admin/model/InvoiceTicket.php

<?php
declare (strict_types = 1);

namespace app\admin\model;

use think\Model;

/**
 * @mixin \think\Model
 */
class InvoiceTicket extends Model
{
    public function getItemAttr($v){
        return json_decode($v,true);
    }
    public function setItemAttr($v){
      return json_encode($v,JSON_UNESCAPED_UNICODE);
    }
   public static function OnAfterUpdate(Model $model){
       if($model->status==1 && $model->type==0 && $model->is_del==0 && !empty($model->item)){
          (new  InvoiceItem)->saveAll(array_map(function ($item)use($model) {
              return [
                  'invoice_code'=>$model->invNo,
                  'order_type'=>1,
                  'good_name'=>$item['XMMC'],
                  'unit'=>$item['DW'],
                  'num'=>$item['SPSL'],
                  'unit_price'=>$item['DJ'],
                  'amount'=>$item['JE'],
                  "tax_amount"=>$item['SE'],
                  "tax"=>$item['SL'],
                  "cat_code"=>$item['SPBM'],
                  "total_amount"=>bcadd($item['JE'],$item['SE'],2),
                  "balance_amount"=>bcadd($item['JE'],$item['SE'],2),
              ];
          },$model->item));
       }
   }
}