模块组合筛选中复选框怎么筛选，

 <p style="line-height:30px"> <strong>所属单位：</strong> {php $field = dr_field_options('danwei');} <a class="label {if !$get.danwei}label-success{else}label-default{/if}" href="{dr_search_url($params, 'danwei', NULL)}">不限</a> {loop $field $i $t} <a class="label {if $i==$get.danwei}label-success{else}label-default{/if}" href="{dr_search_url($params, 'danwei', $i)}">{$t}</a> {/loop} </p>

 {if $searchid}                                                                   

          {list action=search module=$dirname id=$searchid total=$sototal catid=$catid page=1 pagesize=10 urlrule=$urlrule}