crm/app/sys/validate/Msg.php

<?php

namespace app\sys\validate;

use think\Validate;

class Msg extends Validate
{
    // 验证规则
    protected $rule = [
        'msg' => 'require',
        'id' => 'require',
        'index' => 'require',

    ];

    // 验证消息
    protected $message  =   [
        'title.require' => '请输入消息内容',
        'id.require' => '缺少参数id',
        'index.require' => '缺少参数index',

    ];

    // 验证场景
    protected $scene = [
        'add'  =>  ['msg'],
        'read_list_view'=>['id'],
        'read_list'=>['index'],
    ];
}