mingde-bd/application/common/validate/Train.php

<?php
namespace app\common\validate;

use think\Validate;

class Train extends Validate{

    protected $rule = [
        'title|标题'  =>  'require|length:1,200',
        'start|开始时间'  =>  'require|length:1,200',
        'end|结束时间'  =>  'require|length:1,200',
    ];

    protected $message = [
        'title.length' => '名称必须200字以内',
    ];

    protected $scene = [

    ];

}