smarty查询方法,该如何处理

<form><br />    <input type="text" id="t" value="" name="t"/><br />	<input type="button"  class="anniu4" value="查询" onclick="window.location='city.php?module=query'"/><br />    </form>

<?php<br />require_once('adminbase.php');<br />require_once('CityBusiness.php');<br />//用户管理<br />$module = $_REQUEST["module"];<br />$city = new CityBusiness();<br />if (!isset($module) || $module == "list")<br />{<br />	$smarty->assign("pageTitle","城市管理");<br />	$list = $city->getAllList();<br />	$smarty->assign("list",$list);<br />	$smarty->display('admin/city/list.tpl');<br />}<br />else if ($module == "query")<br />{<br />    <br />	<br />	<br />	$smarty->display('admin/city/query.tpl');<br />}