caipan_shop_admin/app/validate/Article.php

<?php
namespace app\validate;

use think\Validate;

class Article extends Validate
{
    protected $rule = [
        'title' => 'require',
        'link' => 'url'
    ];
    protected $message = [
        'title.require' => '标题必须',
        'link.url' => '请填写有效的网址'
    ];
}