碰到一个smarty中的怪问题,麻烦帮忙

Question

<* foreach name=roomCates item=roomCate from=$arrRoomCates *>
      <div class="chat1">
        <div class="chatroom_gr"><* $roomCate.Name *></div>
        <div class="chatroom_gr_bot">
          <ul>
              <* foreach name=cateRooms item=cateRooms from=$arrCateRooms.$roomCate*>
            <li><a href="/free/t8518.html" target="_blank">testtest</a>(102/151)</li>
            <* /foreach *>
          </ul>
        </div>
      </div>
      <* /foreach *>

Answer 1

<* foreach name=roomCates item=roomCate from=$arrRoomCates *>
      <div class="chat1">
        <div class="chatroom_gr"><* $roomCate.Name *></div>
        <div class="chatroom_gr_bot">
          <ul>
            <* assign var=roomCate_id value=$roomCate.ID *>
　　　　　　　<* foreach name=cateRooms item=cateRooms from=$arrCateRooms.$roomCate_id *>
            <li><a href="/free/t8518.html" target="_blank">testtest</a>(102/151)</li>
            <* /foreach *>
          </ul>
        </div>
      </div>
      <* /foreach *>