织梦dedecms如何在channel标签中调用栏目描述[field:description/]

只要在include\taglib\channel.lib.php      找到下面黑色代码,加入下面红色代码 description,即可   位置在78行    if($type=='top')     {         $sql = "SELECT id,typename,description,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath           From `dede_arctype` WHERE reid=0 And ishidden<>1 order by sortrank asc limit 0, $line ";     }     else if($type=='son')     {         if($typeid==0) return '';         $sql = "SELECT id,typename,description,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath           From `dede_arctype` WHERE reid='$typeid' And ishidden<>1 order by sortrank asc limit 0, $line ";     }     else if($type=='self')     {         if($reid==0) return '';         $sql = "SELECT id,typename,description,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath             FROM `dede_arctype` WHERE reid='$reid' And ishidden<>1 order by sortrank asc limit 0, $line ";     }

然后即可调用:
例如:
{dede:channel type='son' typeid='21'}
<p>[field:description/]</p>
{/dede:channel}