hcsl/app/Model/DeviceOrder.php

<?php

namespace App\Model;

use Illuminate\Database\Eloquent\Model;

class DeviceOrder extends Model
{
    protected $table = "device_order"; //指定表
    const CREATED_AT = 'crt_time';
    const UPDATED_AT = 'upd_time';
    protected $dateFormat = 'U';
    const Model_type_one = 1; // 巡检
    const Model_type_two = 2; // 点检
    const Model_type_three = 3; // 维修

    public static $prefix = [
        self::Model_type_one => 'XJ',
        self::Model_type_two => 'DJ',
        self::Model_type_three => 'WX',
    ];

    public static $prefix_title = [
        self::Model_type_one => '巡检单',
        self::Model_type_two => '点检单',
        self::Model_type_three => '维修单',
    ];
}