yanglao/application/api/validate/service/PackageOrder.php

<?php
namespace app\api\validate\service;

use think\Validate;

class PackageOrder extends Validate
{
    protected $rule =   [
        'package_card_id '             => 'require',
        'paytype'                  => 'require',
    ];

    protected $message  =   [
        'package_card_id.require' => '请选择套餐产品',
        'paytype.require'          => '请选择支付方式',
    ];

    protected $scene = [
        'add'   =>  ['package_card_id','paytype'],
    ];
}