xtu_mall/app/admin/model/AuthRule.php

<?php
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// +----------------------------------------------------------------------
// | 权限规则模型
// +----------------------------------------------------------------------
namespace app\admin\Model;

use think\facade\Cache;
use think\Model;

class AuthRule extends Model
{
    const RULE_URL  = 1;
    const RULE_MAIN = 2; //主菜单

    // 自动写入时间戳
    protected $autoWriteTimestamp = true;

    public static function onAfterWrite($row)
    {
        Cache::delete('__menu__');
    }
}