cxinv/app/admin/model/InvoiceTicket.php

<?php
declare (strict_types = 1);

namespace app\admin\model;

use think\facade\Log;
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 onAfterWrite(Model $model){
        Log::info('InvoiceInfo::OnAfterWrite'.json_encode($model->toArray()));
            if($model->status==1 && !empty($model['item'])){
                (new  InvoiceItem)->saveAll(array_map(function ($item)use($model) {
                              return [
                                  'invoiceCode'=>$model->invNo,
                                  'order_type'=>1,
                                  'good_name'=>$item['XMMC'],
                                  'unit'=>$item['DW'],
                                  'num'=>$item['SPSL'],
                                  'specinfo'=>$item['GGXH'],
                                  'unit_price'=>$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']));
            }
   }
}