jya-oa-api/application/common/validate/Rules.php

<?php
namespace app\common\validate;

use think\Validate;

class Rules extends Validate{

    protected $rule = [
        'name|名称'  =>  'require|length:1,20',
    ];

    protected $message = [
        'name.length' => '名称必须20字以内',
    ];

    protected $scene = [

    ];

}