$result = Db::name('data')->where('uid',session('xx.uid'))->select();

$this->assign('data', $result);

application/modulea/view/x/test.html

{volist name="data" id="item_data"}
 <h3>{$item_data}</h3>
{/volist}

{volist name="data" id="item_data"}
 <h3>{$i.'='.$item_data}</h3>
{/volist}

<form action="/modulea/x/login"></form>

<iframe src='/modulea/x/test2' name='fr'></iframe>

<a href="{:url($item_data['url'])}" rel="external nofollow" target="fr"></a>

$this->user = session('xx');
if(!this->user['uid']){
 return $this->redirect('/modulea/x/login');
}