擴(kuò)展的字段名叫：tuijian_pdf
目前的前端語句如下：
<!-- 調(diào)用推薦的PDF文庫的文章ID -->
{eyou:notempty name='$eyou.field.tuijian_pdf'}
<div class="ns_explore_pdf">
<div class="container">
<h2>相關(guān)文章</h2>
<ul>
{eyou:artlist idlist='$eyou.field.tuijian_pdf' addfields='fujian' loop='999' }
{eyou:notempty name='$field.fujian' /}
<li><a href="{$field.fujian}" target="_blank"><strong>{$field.title}</strong><span>{$field.subtitle}</span></a></li>
{eyou:else /}
<li><a href="{$field.arcurl}" target="_blank"><strong>{$field.title}</strong><span>{$field.subtitle}</span></a></li>
{/eyou:notempty}
{/eyou:artlist}
<div class="clear"></div>
</ul>
</div>
</div>
{/eyou:notempty}