erp/app/Models/BusinessOrderServer.php

<?php


namespace App\Models;

use Carbon\Carbon;
use Illuminate\Database\Eloquent\Model;
class BusinessOrderServer extends Model
{

    protected $table='business_order_server';
    public $timestamps = false;
    protected $dates = ['lasted_at'];
    public function save(array $options = [])
    {
        if(!$this->exists) {
        } else {
            $this->lasted_at = Carbon::now();
        }
        parent::save($options);
    }
}