我目前面临一个我无法解决的问题，也许你可以帮助我。
我正在显示所有尺寸的下拉列表。现在我想在尺寸旁边显示产品缺货（缺货）时的下拉列表。
我找到了一个片段，它显示了哪些产品缺货：
{foreach from=$combinations key=idCombination item=combination}
{if $combination.quantity == 0}
{assign var=attributes value=','|explode:$combination.list}
{foreach from=$groups key=id_attribute_group item=group}
{foreach from=$group.attributes key=id_attribute item=group_attribute}
{foreach from=$attributes item=attribute name=attribute}
{if $id_attribute == $attribute|substr:1:-1}
{$group_attribute} - {* if !$smarty.foreach.attribute.last}, {/if *}
{/if}
{/foreach}
{/foreach}
{/foreach}
{/if}
{/foreach}
{/strip}{/if}
它有效，但我更想在下拉列表中显示它。我怎样才能得到这个？
update - 生成下拉列表的代码
<div id="attributes">
{foreach from=$groups key=id_attribute_group item=group}
{if $group.attributes|@count}
<fieldset class="attribute_fieldset">
<label class="attribute_label" for="group_{$id_attribute_group|intval}">{$group.name|escape:'htmlall':'UTF-8'} :</label>
{assign var="groupName" value="group_$id_attribute_group"}
<div class="attribute_list">
------ this is the select ----------------------
{if ($group.group_type == 'select')}
<select name="{$groupName}" id="group_{$id_attribute_group|intval}" class="attribute_selectt" onchange="findCombination();getProductAttribute();{if $colors|@count > 0}$('#wrapResetImages').show('slow');{/if};">
{foreach from=$group.attributes key=id_attribute item=group_attribute}
<option value="{$id_attribute|intval}"{if (isset($smarty.get.$groupName) && $smarty.get.$groupName|intval == $id_attribute) || $group.default == $id_attribute} selected="selected"{/if} title="{$group_attribute|escape:'htmlall':'UTF-8'}">{$group_attribute|escape:'htmlall':'UTF-8'}</option>
{/foreach}
</select>
------------ select endd ----------------
{elseif ($group.group_type == 'color')}
<ul id="color_to_pick_list" class="clearfix">
{assign var="default_colorpicker" value=""}
{foreach from=$group.attributes key=id_attribute item=group_attribute}
<li{if $group.default == $id_attribute} class="selected"{/if}>
<a id="color_{$id_attribute|intval}" class="color_pick{if ($group.default == $id_attribute)} selected{/if}" style="background: {$colors.$id_attribute.value} !important;" title="{$colors.$id_attribute.name}" onclick="colorPickerClick(this);getProductAttribute();{if $colors|@count > 0}$('#wrapResetImages').show('slow');{/if}">
{if file_exists($col_img_dir|cat:$id_attribute|cat:'.jpg')}
<img src="{$img_col_dir}{$id_attribute}.jpg" alt="{$colors.$id_attribute.name}" width="20" height="20" /><br>
{/if}
</a>
</li>
{if ($group.default == $id_attribute)}
{$default_colorpicker = $id_attribute}
{/if}
{/foreach}
</ul>
<input type="hidden" class="color_pick_hidden" name="{$groupName}" value="{$default_colorpicker}" />
{elseif ($group.group_type == 'radio')}
{foreach from=$group.attributes key=id_attribute item=group_attribute}
<input type="radio" class="attribute_radio" name="{$groupName}" value="{$id_attribute}" {if ($group.default == $id_attribute)} checked="checked"{/if} onclick="findCombination();getProductAttribute();{if $colors|@count > 0}$('#wrapResetImages').show('slow');{/if}"> {$group_attribute|escape:'htmlall':'UTF-8'}<br/>
{/foreach}
{/if}
</div>
</fieldset>
{/if}
{/foreach}
</div>
