drb/app/Model/Oa.php

<?php

namespace App\Model;

use Illuminate\Database\Eloquent\Model;

/**
 *
 * Class Unit
 * @package App\Models
 */
class Oa extends Model
{
    protected $table = "oa"; //指定表
    const CREATED_AT = 'crt_time';
    const UPDATED_AT = 'upd_time';
    protected $dateFormat = 'U';

    const sub_type_one = 1; //正常创建的
    const sub_type_two = 2; //分社采购单 分社向总社采购的审批流程
    const sub_type_three = 3; //退货单 退分社采购单且是向总社采购的
}