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Dedecms文章Tag标签或Keyword关键字调用相关文章的方法
- 时间：2025-03-30 05:42:05 来源： 人气：2
在网站建设中，精准输出相关文章对于提升用户体验和搜索引擎优化（SEO）至关重要。然而，官方提供的 `dede:likearticle` 标签可能无法满足所有需求。为了实现更精确的相关文章推荐，我们可以自定义一个类库文件来增强功能。以下是一个详细的解决方案。
复制代码
<?php
if(!defined('DEDEINC')) exit('Request Error!');
function lib_liketags(&$ctag,&$refObj)
{
global $dsql,$envs;
// 属性处理
$attlist="row|12,titlelen|30,infolen|250,col|1,tablewidth|100,typeid|0,byabs|0,imgwidth|120,imgheight|90,flag|";
FillAttsDefault($ctag->CAttribute->Items,$attlist);
extract($ctag->CAttribute->Items, EXTR_SKIP);
$revalue = '';
if(empty($tablewidth)) $tablewidth = 100;
if(empty($col)) $col = 1;
$colWidth = ceil(100/$col);
$tablewidth = $tablewidth."%";
$colWidth = $colWidth."%";
$orwheres = '';
if($flag != '') {
$flags = explode(',', $flag);
for($i=0; isset($flags[$i]); $i++) $orwheres .= " AND FIND_IN_SET('{$flags[$i]}', arc.flag)>0 ";
}
$ids = array();
$tids = array();
if(!empty($refObj->Fields['tags'])) {
$keyword = $refObj->Fields['tags'];
} else {
$keyword = (!empty($refObj->Fields['keywords']) ? $refObj->Fields['keywords'] : '');
}
$typeid = (!empty($typeid) ? $typeid : 0);
if(empty($typeid)) {
if(!empty($refObj->Typelink->TypeInfos['reid'])) {
$typeid = $refObj->Typelink->TypeInfos['reid'];
} else {
if(!empty($refObj->Fields['typeid'])) $typeid = $refObj->Fields['typeid'];
}
}
if(!empty($refObj->Fields['tags']) && $eregtype != 'keyword') {
$tags = explode(',', addslashes($refObj->Fields['tags']));
$getsql = " tag like '".join("' OR tag like '", $tags)."' ";
$dsql->Execute('me', "Select * From `dede_tagindex` where $getsql ");
while($arow = $dsql->GetArray('me')) {
$tids[] = $arow['id'];
}
$tid = join(',', $tids);
if($tid!='') {
$dsql->Execute("me", "Select aid From `dede_taglist` where tid in($tid) And arcrank > -1 group by aid order by aid desc");
while($arow = $dsql->GetArray("me")) {
$ids[] = $arow['aid'];
$arcid = $refObj->Fields['aid'];
}
}
}
// 获得附加表的相关信息
$addField = "";
$addJoin = "";
if(is_object($refObj->ChannelUnit)) {
$addtable = $refObj->ChannelUnit->ChannelInfos['addtable'];
if($addtable!="") {
$addJoin = " LEFT JOIN $addtable ON arc.id = ".$addtable.".aid ";
$addField = "";
$fields = explode(",",$refObj->ChannelUnit->ChannelInfos['listfields']);
foreach($fields as $k=>$v) {
$nfields[$v] = $k;
}
foreach($refObj->ChannelUnit->ChannelFields as $k=>$arr) {
if(isset($nfields[$k])) {
if(!empty($arr['rename'])) {
$addField .= ",".$addtable.".".$k." as ".$arr['rename'];
} else {
$addField .= ",".$addtable.".".$k;
}
}
}
}
}
if($eregtype == 'tag' && count($ids) == 0 ) {
return;
} else {
if(count($ids) > 0) {
if(!empty($typeid)) {
$typeid = " And arc.typeid in($typeid) And arc.id<>$arcid ";
}
$idsStr = join(',', $ids);
$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule, tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath $addField from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id $addJoin where arc.arcrank>-1 and arc.id in($idsStr) $typeid order by arc.id desc limit 0, $row";
} else {
$limitRow = $row - count($ids);
$keyword = '';
if(!empty($refObj->Fields['keywords'])) {
$keywords = explode(',' , trim($refObj->Fields['keywords']));
$keyword = '';
$n = 1;
foreach($keywords as $k) {
if($n > 3) break;
if(trim($k)=='') continue;
else $k = addslashes($k);
$keyword .= ($keyword=='' ? " CONCAT(arc.keywords,' ',arc.title) like '%$k%' " : " OR CONCAT(arc.keywords,' ',arc.title) like '%$k%' ");
$n++;
}
}
$arcid = (!empty($refObj->Fields['id']) ? $refObj->Fields['aid'] : 0);
if( empty($arcid) || $byabs==0 ) {
$orderquery = " order by arc.id desc ";
} else {
$orderquery = " order by ABS(arc.id - ".$arcid.") ";
}
if($keyword != '') {
if(!empty($typeid)) {
$typeid = " And arc.typeid in($typeid) And arc.id<>$arcid ";
}
$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule, tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath $addField from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id $addJoin where arc.arcrank>-1 and ($keyword) $typeid $orderquery limit 0, $row";
} else {
if(!empty($typeid)) {
$typeid = " arc.typeid in($typeid) And arc.id<>$arcid ";
}
$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule, tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath $addField from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id $addJoin where arc.arcrank>-1 and $typeid $orderquery limit 0, $row";
}
}
}
$innertext = trim( $ctag->GetInnerText() );
if($innertext=='') $innertext = GetSysTemplets('part_arclist.htm');
$dsql->SetQuery($query);
$dsql->Execute('al');
$artlist = '';
if($col > 1){
$artlist = "<table width='$tablewidth' border='0' cellspacing='0' cellpadding='0'>";
}
$dtp2 = new DedeTagParse();
$dtp2->SetNameSpace('field', '[', ']');
$dtp2->LoadString($innertext);
$GLOBALS['autoindex'] = 0;
$line = $row;
for($i=0; $i < $line; $i++) {
if($col>1) $artlist .= "<tr>";
for($j=0; $j < $col; $j++) {
if($col>1) $artlist .= " <td width='$colWidth'>";
if($row = $dsql->GetArray("al")) {
$ids[] = $row['id'];
$row['info'] = $row['infos'] = cn_substr($row['description'],$infolen);
$row['id'] = $row['id'];
if($row['corank'] > 0 && $row['arcrank']==0) {
$row['arcrank'] = $row['corank'];
}
$row['filename'] = $row['arcurl'] = GetFileUrl($row['id'],$row['typeid'],$row['senddate'],$row['title'],$row['ismake'], $row['arcrank'],$row['namerule'],$row['typedir'],$row['money'],$row['filename'],$row['moresite'],$row['siteurl'],$row['sitepath']);
$row['typeurl'] = GetTypeUrl($row['typeid'],$row['typedir'],$row['isdefault'],$row['defaultname'],$row['ispart'], $row['namerule2'],$row['moresite'],$row['siteurl'],$row['sitepath']);
if($row['litpic'] == '-' || $row['litpic'] == '') {
$row['litpic'] = $GLOBALS['cfg_cmspath']."/images/defaultpic.gif";
}
if(!preg_match("#^http://#i", $row['litpic']) && $GLOBALS['cfg_multi_site'] == 'Y') {
$row['litpic'] = $GLOBALS['cfg_mainsite'].$row['litpic'];
}
$row['picname'] = $row['litpic'];
$row['stime'] = GetDateMK($row['pubdate']);
$row['typelink'] = "<a href='".$row['typeurl']."'>".$row['typename']."</a>";
$row['image'] = "<img src='".$row['picname']."' border='0' width='$imgwidth' height='$imgheight'>";
$row['imglink'] = "<a href='".$row['filename']."'>".$row['image']."</a>";
$row['fulltitle'] = $row['title'];
$row['title'] = cn_substr($row['title'], $titlelen);
if($row['color']!='') $row['title'] = "<font color='".$row['color']."'>".$row['title']."</font>";
if(preg_match('/b/', $row['flag'])) $row['title'] = "<strong>".$row['title']."</strong>";
$row['textlink'] = "<a href='".$row['filename']."'>".$row['title']."</a>";
$row['plusurl'] = $row['phpurl'] = $GLOBALS['cfg_phpurl'];
$row['memberurl'] = $GLOBALS['cfg_memberurl'];
$row['templeturl'] = $GLOBALS['cfg_templeturl'];
if(is_array($dtp2->CTags)) {
foreach($dtp2->CTags as $k=>$ctag) {
if($ctag->GetName()=='array') {
$dtp2->Assign($k,$row);
} else {
if(isset($row[$ctag->GetName()])) $dtp2->Assign($k,$row[$ctag->GetName()]);
else $dtp2->Assign($k,'');
}
}
$GLOBALS['autoindex']++;
}
$artlist .= $dtp2->GetResult();
} else {
$artlist .= '';
}
if($col>1) $artlist .= " </td>";
}
if($col>1) $i += $col - 1;
if($col>1) $artlist .= " </tr>";
}
if($col>1) $artlist .= " </table>";
$dsql->FreeResult("al");
return $artlist;
}
?>
在上述代码中，我们创建了一个名为 `liketags.lib.php` 的文件，并将其放置在 `/include/taglib` 目录下。该文件通过处理标签、关键词和附加字段等信息，实现了更精准的相关文章推荐。
前台模板调用示例：
复制代码
{dede:liketags row='3' typeid='6' titlelen='250' eregtype='all|tag|keyword' flag='c' infolen='250'}
<li>
<a href="[field:arcurl/]" title="[field:title/]" target="_blank">
<div class="list-img">
<img src="[field:litpic/]" alt="[field:title/]" />
</div>
<div class="list-info">
<p class="title">[field:title/]</p>
<p class="meta">￥[field:jiage/]元</p>
</div>
</a>
</li>
{/dede:liketags}
通过以上方法，您可以更灵活地控制相关文章的展示方式，从而提高网站的SEO效果和用户体验。
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