插件名称：网店系统

购物车列表怎么调用该商品的栏目id呢？

<tbody>
{loop $list $i $t} 
{php $sku_name=dr_string2array($t.sku_name);}
  <tr id="dr_row_{$t.id}">
    <td style="">
      <label class="mt-table mt-checkbox mt-checkbox-single mt-checkbox-outline">
        <input type="checkbox" checked="checked" class="checkboxes" name="ids[]" value="{$t.id}" />
        <span></span></label>
    </td>
    <td class="cart_product" style="text-align: center">
      <a href="{$t.url}" title="{$t.title}">
        <img style="width: 70px; height: 70px;" src="{dr_thumb($t.thumb, 70, 70)}"></a>
    </td>
    <td class="cart_description">
      <p class="product-name">
        <a href="{$t.url}" title="{$t.title}">{dr_strcut($t.title, 50)}</a></p>{loop $sku_name $i $c}
      <small class="cart_ref">{$i}: {$c}</small>{/loop}</td>
    <td class="price pprice">{if $t.yuan}
      <p>￥
        <span class="regular-price">{number_format($t.price, 2)}</span>元</p>
      <p class="pyuan">￥
        <span>{number_format($t.yuan, 2)}</span>元</p>
      <p>{$t.p_info}</p>{else} ￥
      <span class="regular-price">{number_format($t.price, 2)}</span>元 {/if}</td>
    <td class="qty" style="width: 150px">
      <input class="dr_buy_num" iid="{$t.id}" type="text" value="{$t.quantity}"></td>
    <td class="price">￥
      <span id="dr_total_{$t.id}" class="regular-price">{number_format($t.price * $t.quantity, 2)}</span>元</td>
    <td class="action">
      <a href="[removed]dr_cart_del('{$t.id}');">删除</a></td>
  </tr>
  {/loop}
  </tbody>