递归

public function _initialize()
{
if (!Session::has('user', 'think')) {
$this->error('您还没有登录', 'Login/index');
}
}

public function index()
{
$value=Session::get("user","think");
$uid=$value["uid"];
$data = Db::query("select * from access where aid in (select a_id from r_a where r_id in (select r_id from u_r where u_id=$uid))");
$res=$this->digui($data);
Session::set("access",$res,"think");
return view("index",['list'=>$res,'data'=>$value]);
}

public function digui($data,$level=0,$pid=0){
static $array=array();
foreach($data as $k=>$v){
if($v['pid']==$pid){
$v['level']=$level;
$v['url']=$v['controller_name']."/".$v['action_name'];
$array[]=$v;
$this->digui($data,$level+1,$v['aid']);
}
}
return $array;
}

//join查询递归

$data=Db::table("user")
->join('user_role','user.uid=user_role.u_id')
->join('role','user_role.r_id=role.rid')
->join('role_node','role.rid=role_node.r_id')
->join('node','role_node.n_id=node.nid')
->select();
//print_r($data);
$arr=[];
foreach($data as $k=>$v){
$arr['uid']=$v['uid'];
$arr['uname']=$v['username'];
$arr['role_name']=$v['r_name'];
$arr['one_menu'][]=['n_name'=>$v['n_name'],'n_url'=>$v['n_url'],'pid'=>$v['pid'],'n_id'=>$v['nid']];
}
// print_r($arr);
foreach($arr['one_menu'] as $kk =>$vv){
$res =Db::table("node")->where("pid=".$vv['n_id'])->select();
$arr['one_menu'][$kk]['two_menu'] =$res;
}
// print_r($arr);
return view("home",['list'=>$arr]);

<a href="index.html">退出</a>
<p>当前登录账号:{$list.uname}</p>
<p>当前登录账号:{$list.role_name}</p>
<p>权限:</p>
<div>
<ul class="one">
{volist name="list.one_menu" id="v"}
<li><a href="{$v.n_url}" class="cli">{$v.n_name}</a></li>
<div style="display: none">
<ul>
{volist name="v.two_menu" id="vo"}
<li class="two"><a href="{$vo.n_url}">{$vo.n_name}</a></li>
{/volist}
</ul>
</div>
{/volist}
</ul>
</div>
</body>
</html>
<script src="__STATIC__/js/jq.js"></script>
<script>
$(document).ready(function(){
$(".cli").click(function(){
$(this).parent().next("div").slideToggle();
});
});