如何实现织梦cms上一篇下一篇自由可控输出链接、标题、缩略图、时间

在不影响程序原来功能的基础下，二次开发让上一篇下一篇标签自由可控地输出链接、标题、缩略图、时间，没有上一篇或者下一篇时不输出任何东西

打开 /include/arc.archives.class.php 找到 大概在 735 行左右的

else if($ctag->GetName()=='fieldlist')

在上面加入

else if($ctag->GetName()=='prenextdiy')
{
	$innertext = trim($ctag->GetInnerText());
	if($innertext)
	{
		$get = $ctag->GetAtt('get');
		$diys['diy'] = $this->GetPreNext('diy');
		$revalue = '';
		$dtp2 = new DedeTagParse();
		$dtp2->SetNameSpace('field','[',']');
		$dtp2->LoadSource($innertext);
		foreach($diys as $row)
		{
			foreach($dtp2->CTags as $tid=>$ctag2)
			{
				if(isset($row[$get][$ctag2->GetName()]))
				{
					$dtp2->Assign($tid,$row[$get][$ctag2->GetName()]);
				}
			}
			$revalue .= $dtp2->GetResult();
		}
		if($row[$get]['id']) $this->dtp->Assign($i,$revalue);
	}
}

继续找到，大概在852行左右的

$this->PreNext['pre'] = "上一篇：<a href='$mlink'>{$preRow['title']}</a> ";

在上面加入

$preRow['litpic'] = (empty($preRow['litpic'])) ? $GLOBALS['cfg_cmspath'].'/images/defaultpic.gif' : $preRow['litpic'];
$this->PreNext['diy']['pre']['id'] = $preRow['id'];
$this->PreNext['diy']['pre']['arcurl'] = $mlink;
$this->PreNext['diy']['pre']['title'] = $preRow['title'];
$this->PreNext['diy']['pre']['litpic'] = $preRow['litpic'];
$this->PreNext['diy']['pre']['pubdate'] = $preRow['senddate'];

继续找到，大概在875行左右的

$this->PreNext['next'] = "下一篇：<a href='$mlink'>{$nextRow['title']}</a> ";

在上面加入

$nextRow['litpic'] = (empty($nextRow['litpic'])) ? $GLOBALS['cfg_cmspath'].'/images/defaultpic.gif' : $nextRow['litpic'];
$this->PreNext['diy']['next']['id'] = $nextRow['id'];
$this->PreNext['diy']['next']['arcurl'] = $mlink;
$this->PreNext['diy']['next']['title'] = $nextRow['title'];
$this->PreNext['diy']['next']['litpic'] = $nextRow['litpic'];
$this->PreNext['diy']['next']['pubdate'] = $nextRow['senddate'];

继续找到，大概在 889 行左右的

if($gtype=='pre')

在上面加入

if($gtype=='diy')
{
	return $this->PreNext['diy'];
}

内容页模板里上一篇下一篇调用标签写法 dede:prenextdiy

上一篇
{dede:prenextdiy get='pre'}
<li>
	<a href="[field:arcurl/]"><img src="[field:litpic/]" width="50" height="50"></a>
	<p><a href="[field:arcurl/]">[field:title/]</a><span>时间:[field:pubdate function="MyDate('Y-m-d',@me)"/]</span></p>
</li>
{/dede:prenextdiy}

下一篇
{dede:prenextdiy get='next'}
<li>
	<a href="[field:arcurl/]"><img src="[field:litpic/]" width="50" height="50"></a>
	<p><a href="[field:arcurl/]">[field:title/]</a><span>时间:[field:pubdate function="MyDate('Y-m-d',@me)"/]</span></p>
</li>
{/dede:prenextdiy}