dede文章页面的上一篇下一篇增加文章摘要

系统默认的是在dede的上一篇和下一篇的链接只显示标题，但是有时我们希望显示其他信息，比如文章的摘要。

找到arc.archives.class.php文件，在include目录下面，然后查找“GetPreNext”这个函数，将

$query
= "Select
arc.id,arc.title,arc.shorttitle,arc.typeid,arc.ismake,arc.senddate,arc.arcrank,arc.money,arc.filename,arc.litpic,
t.typedir,t.typename,t.namerule,t.namerule2,t.ispart,t.moresite,t.siteurl,t.sitepath
from `jcode_archives` arc left join jcode_arctype t on arc.typeid=t.id ";


改成


$query = "Select
arc.id,arc.title,arc.shorttitle,arc.typeid,arc.ismake,arc.senddate,arc.arcrank,arc.money,arc.filename,arc.litpic,
arc.description,t.typedir,t.typename,t.namerule,t.namerule2,t.ispart,t.moresite,t.siteurl,t.sitepath
from `jcode_archives` arc left join jcode_arctype t on arc.typeid=t.id ";


比较一下其实现在只是多了arc.description，这就是文章的摘要，也称为文章描述。
需要注意的是这里的jcode_archives和jcode_arctype中的jcode_是我表结构的前缀，你需要将这个前缀改成你自己的。

现在我们已经将文章描述从数据库里面取出来了。下一步将描述显示在页面上,显示连接文字的代码本来是这样的，你可以通过查找找到，其实就在上面那段代码的附近：

if(is_array($preRow))
{
$mlink =
GetFileUrl($preRow['id'],$preRow['typeid'],$preRow['senddate'],$preRow['title'],$preRow['ismake'],$preRow['arcrank'],
$preRow['namerule'],$preRow['typedir'],$preRow['money'],$preRow['filename'],$preRow['moresite'],$preRow['siteurl'],$preRow['sitepath']);
$this->PreNext['pre']
= "上一篇：<a rel="nofollow noopener noreferrer" href='$mlink'>{$preRow['title']}</a>
";
$this->PreNext['preimg'] = "<a rel="nofollow noopener noreferrer" href='$mlink'><img
src=\&;{$preRow['litpic']}\&; />";
}
else
{
$this->PreNext['pre'] = "上一篇：没有了 ";
$this->PreNext['preimg']
="<img src=\&;/templets/default/images/nophoto.jpg\&;
alt=\&;对不起，没有上一图集了！\&;/>";
}
if(is_array($nextRow))
{
$mlink =
GetFileUrl($nextRow['id'],$nextRow['typeid'],$nextRow['senddate'],$nextRow['title'],$nextRow['ismake'],$nextRow['arcrank'],
$nextRow['namerule'],$nextRow['typedir'],$nextRow['money'],$nextRow['filename'],$nextRow['moresite'],$nextRow['siteurl'],$nextRow['sitepath']);
$this->PreNext['next']
= "下一篇：<a rel="nofollow noopener noreferrer" href='$mlink'>{$nextRow['title']}</a>
";
$this->PreNext['nextimg'] = "<a rel="nofollow noopener noreferrer" href='$mlink'><img
src=\&;{$nextRow['litpic']}\&; />";
}
else
{
$this->PreNext['next'] = "下一篇：没有了 ";
$this->PreNext['nextimg'] ="<a rel="nofollow noopener noreferrer" href='javascript：void(0)'
alt=\&;\&;><img src=\&;/templets/default/images/nophoto.jpg\&;
alt=\&;对不起，没有下一图集了！\&;/></a>";
}
}

现在为了显示出文章描述，在每一个a标签之后添加一个div div中包含文章描述(红色部分)：

if(is_array($preRow))
{
$mlink =
GetFileUrl($preRow['id'],$preRow['typeid'],$preRow['senddate'],$preRow['title'],$preRow['ismake'],$preRow['arcrank'],
$preRow['namerule'],$preRow['typedir'],$preRow['money'],$preRow['filename'],$preRow['moresite'],$preRow['siteurl'],$preRow['sitepath']);
$this->PreNext['pre']
= "上一篇：<a rel="nofollow noopener noreferrer" href='$mlink'>{$preRow['title']}</a> <div>{$preRow['description']}</div>
";
$this->PreNext['preimg'] = "<a rel="nofollow noopener noreferrer" href='$mlink'><img
src=\&;{$preRow['litpic']}\&; />}
else
{
$this->PreNext['pre']
= "上一篇：没有了 ";
$this->PreNext['preimg'] ="<img
src=\&;/templets/default/images/nophoto.jpg\&;
alt=\&;对不起，没有上一图集了！\&;/>";
}
if(is_array($nextRow))
{
$mlink =
GetFileUrl($nextRow['id'],$nextRow['typeid'],$nextRow['senddate'],$nextRow['title'],$nextRow['ismake'],$nextRow['arcrank'],
$nextRow['namerule'],$nextRow['typedir'],$nextRow['money'],$nextRow['filename'],$nextRow['moresite'],$nextRow['siteurl'],$nextRow['sitepath']);
$this->PreNext['next']
= "下一篇：<a rel="nofollow noopener noreferrer" href='$mlink'>{$nextRow['title']}</a> <div>{$preRow['description']}</div>
";
$this->PreNext['nextimg'] = "<a rel="nofollow noopener noreferrer" href='$mlink'><img
src=\&;{$nextRow['litpic']}\&; />}
else
{
$this->PreNext['next']
= "下一篇：没有了 ";
$this->PreNext['nextimg'] ="<a rel="nofollow noopener noreferrer" href='javascript：void(0)'
alt=\&;\&;><img src=\&;/templets/default/images/nophoto.jpg\&;
alt=\&;对不起，没有下一图集了！\&;/></a>";
}
}

本文dede文章页面的上一篇下一篇增加文章摘要到此结束。每当我观天的时候我就不喜欢再说话每当我说话的时候我却不敢再观天。小编再次感谢大家对我们的支持！