water/server/plugin/saiadmin/app/validate/system/RegisterValidate.php

<?php
// +----------------------------------------------------------------------
// | saiadmin [ saiadmin快速开发框架 ]
// +----------------------------------------------------------------------
// | Author: sai <1430792918@qq.com>
// +----------------------------------------------------------------------
namespace plugin\saiadmin\app\validate\system;

use plugin\saiadmin\basic\BaseValidate;
use plugin\saiadmin\app\model\system\SystemUser;

/**
 * 匿名注册校验。
 */
class RegisterValidate extends BaseValidate
{
    protected $rule = [
        'username' => 'require|length:3,20|alphaNum|unique:' . SystemUser::class,
        'password' => 'require|length:6,16',
        'confirmPassword' => 'require|confirm:password',
    ];

    protected $message = [
        'username.require' => '请输入用户名',
        'username.length' => '用户名长度需在 3-20 个字符之间',
        'username.alphaNum' => '用户名仅可包含字母与数字',
        'username.unique' => '该用户名已被占用',
        'password.require' => '请输入密码',
        'password.length' => '密码长度需在 6-16 个字符之间',
        'confirmPassword.require' => '请再次输入密码',
        'confirmPassword.confirm' => '两次输入的密码不一致',
    ];

    protected $scene = [
        'register' => ['username', 'password', 'confirmPassword'],
    ];
}