Customer-Service/application/index/validate/Platform.php

<?php
namespace app\index\validate;

use think\Validate;
use think\Lang;

class Platform extends Validate
{
    // 验证规则.
    protected $rule = [
        'platformId'    =>  'require|number|length:1,20',
    ];

    // 触犯规则提示语.
    protected $message = '';

    // 验证层.
    protected $scene = [
        'platformToken'   =>  ['platformId'],
    ];
    public function __construct() {
        $this->message = [
            //'user.require'  =>  '用户名必须',
            //'user.alphaNum'  =>  '用户名必须由字母和数组组成',
            //'user.length'  =>  '用户名为6~20位',
            'platformId'  =>  lang('EP01001'),
        ];
    }
}