DEDE官方的dede:likearticle是利用文章中输入的关键词或者自动分词形成的关键词来关联文章，但是有时候自动生成的关键词并不精确，造成关联不准，这里我们通过自定义一个类库文件来实现精准获取相关文章
可以单用tag来调用相关文章,也可用tag+keyword来调用相关文章(默认tag优先于keyword,可以自己排序)
在 \include\taglib\ 下添加一个liketags.lib.php 代码如下
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'] : '' );
}
$typeid = ( !empty($mytypeid) ? $mytypeid : 0 );
if(empty($typeid))
{
if(!empty($refObj->Typelink->TypeInfos['reid'])) {
$typeid = $refObj->Typelink->TypeInfos['reid'];
}
else {
if(!empty($refObj->Fields['typeid'])) $typeid =
$refObj->Fields['typeid'];
}
}
if( !empty($typeid) && !preg_match('#,#', $typeid) ) {
$typeid = GetSonIds($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 = $refObj->Fields['aid'];
}
}
}
if($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);
$query = "Select
arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,
tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath
from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id
where arc.arcrank>-1 and arc.id in($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 ";
}
$query = "Select
arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,
tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath
from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id
where arc.arcrank>-1 and ($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
from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id
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 = "
\r\n";
}
$dtp2 = new DedeTagParse();
$dtp2->SetNameSpace('field', '[', ']');
$dtp2->LoadString($innertext);
$GLOBALS['autoindex'] = 0;
$line = $row;
for($i=0; $i < $line; $i++)
{
if($col>1) $artlist .= "\r\n";
for($j=0; $j < $col; $j++)
{
if($col>1) $artlist .= " \r\n";
if($row = $dsql->GetArray("al"))
{
$ids[] = $row['id'];
//处理一些特殊字段
$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']);
$row['typelink'] = "".$row['typename']."";
$row['image'] = "!['".preg_replace("#[']('".$row['picname']."') <]#","",$row['title'])."'>";
$row['imglink'] = "".$row['image']."";
$row['fulltitle'] = $row['title'];
$row['title'] = cn_substr($row['title'], $titlelen);
if($row['color']!='') $row['title'] = "".$row['title']."";
if(preg_match('#b#', $row['flag'])) $row['title'] =
"".$row['title']."";
$row['textlink'] = "".$row['title']."";
$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()."\r\n";
}
//if hasRow
else
{
$artlist .= '';
}
if($col>1) $artlist .= " | \r\n";
}
//Loop Col
if($col>1) $i += $col - 1;
if($col>1) $artlist .= "
\r\n";
}
//loop line
if($col>1) $artlist .= "
\r\n";
$dsql->FreeResult("al");
return $artlist;
}
前台模板调用
{dede:liketags row='3' mytypeid='6' eregtype='all|tag|keyword' titlelen='250' infolen='250'}
[field:title/]
[field:description /]
{/dede:liketags}