ym.7in6.com/application/admin/model/Finishedproduct.php

<?php

namespace app\admin\model;

use think\Model;


class Finishedproduct extends Model
{
    protected $connection = 'mongodb';
    protected $table = 'finished_products';
//    protected $append = ['status_text'];

    protected static function init()
    {
        self::afterInsert(function ($row) {
            $pk = $row->getPk();
            $row->getQuery()->where($pk, $row[$pk])->update(['weigh' => $row[$pk]]);
        });
    }



}