zw-api/app/validate/system/LoginValidate.php

<?php

namespace app\validate\system;

use think\Validate;

class LoginValidate extends Validate
{

    protected $rule = [
        "username"  => "require|max:20",
        "code"      => "require",
        "key"       => "require",
        "password"  => "require",
    ];

    protected $message = [
        "username.require"  => "请输入登录名称",
        "username.max"      => "名称格式错误",
        "code.require"      => "请输入验证码",
        "key.require"       => "密钥格式错误",
        "password.require"  => "请输入密码",
    ];

    protected $scene = [
        'login'  =>  ['username','code',"key","password"],
    ];

}