JDF_ElectronicPublicity_admin/app/admin/validate/base/nav/Nav.php

<?php
namespace app\admin\validate\base\nav;
use think\Validate;
class Nav extends Validate
{
    protected $rule = [
        "title"      =>  "require",
        "class_id"      =>  "require",
    ];
    protected $message = [
        "title.require"      =>  "栏目标题不能为空",
        "class_id.require"      =>  "请选择栏目分类",
    ];
}