mingde-bd/application/common/validate/WasteScale.php

<?php
namespace app\common\validate;

use think\Validate;

class WasteScale extends Validate{

    protected $rule = [
        'scale_sn|电子称编号'  =>  'require',
        'user_id|绑定人员'  =>  'require',
        'printer_sn|打印机编号'  =>  'require',
    ];

    protected $message = [
        'user_id.require' => '请选择绑定人员',
    ];

    protected $scene = [

    ];

}