为dede:likearticle添加start channelid orderby等参数-电脑学习网

dedecms中标签{dede:likearticle }{/dede:likearticle}默认不支持order by 和subway属性,因此对我们需要用此标签做自定义调用，比如用likearticle只调用点击高的文章，就实现不了，因此我们需要对该标签进行修改

源文件位置： include\taglib\likearticle.lib.php

1.orderby 属性

首先获得标签传递过来的orderby的属性值
$orderby=$ctag->GetAtt('orderby');
在源代码中有这样一组代码

if( empty($arcid) || $byabs==0 ) {
$orderquery = " order by arc.id desc ";
}
else {
$orderquery = " order by ABS(arc.id-".$arcid.") ";
}

likearticle标签默认的排序方式。赋予标签orderby属性那么这段代码就没意义了，先在源码中注释掉这段代码

直接延用默认的order by 子句变量$orderquery,这样sql语句就不用做更改了。
创建新变量 orderquery='';//mysql 查询语句中的order by子句初始为空
然后根据传递的值做相应的判断，在这里只做一些最常用的值的判断
根据$orderby的值做不同的orderby 查询
if($orderby=='hot' || $orderby=='click') $orderquery = " order by arc.click $orderWay";
else if($orderby == 'sortrank' || $orderby=='pubdate') $orderquery = " order by arc.sortrank $orderWay";
else if($orderby == 'id') $orderquery = " order by arc.id $orderWay";
else if($orderby == 'near') $orderquery = " order by ABS(arc.id-".$arcid.")";
else if($orderby == 'lastpost') $orderquery = " order by arc.lastpost $orderWay";
else if($orderby == 'scores') $orderquery = " order by arc.scores $orderWay";
else if($orderby == 'rand') $orderquery = " order by rand()";
else if($orderby == 'weight') $orderquery = " order by arc.weight asc";//如果没有特定设置排序则按照权重先排序
else $orderquery = " order by arc.sortrank $orderWay";

ok这样就为likearticle标签增加了完整的order by 属性

2.subday属性（标签获取subday指定的最近几天的数据）
同样先获得subday 的属性值
$subday=$ctag->GetAtt('subday');
然后做时间差计算

if($subday > 0)
{
$ntime = gmmktime(0, 0, 0, gmdate('m'), gmdate('d'), gmdate('Y'));
$limitday = $ntime-($subday * 24 * 3600);
$subdaysql = " and arc.senddate > $limitday ";
}

然后在标签源码的两处sql查询语句中增加$subdaysql子句判断
第一处为：

$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,
tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath
from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id
where arc.arcrank>-1 and ($keyword) $typeid $orderquery limit 0, $row";

修改为:

$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,
tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath
from`dede_archives` arc left join`dede_arctype` tp on arc.typeid=tp.id
where arc.arcrank>-1 and ($keyword) $typeid $subdaysql $orderquery limit 0, $row";
第二处为：
$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";
修改为：
$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 $subdaysql $orderquery limit 0, $row";
做完以上更改就为likearticle标签增加了subday属性

以下为修改完之后的likearticle.lib.php的完整代码（增加了 orderby 和 subday 属性）

修改之后完整文件：

<?php   if(!defined('DEDEINC')) exit('Request Error!');  
/** 
* 自动关连文档标签 
* 
* @version        $Id: likearticle.lib.php 1 9:29 2010年7月6日Z tianya $ 
* @package        DedeCMS.Taglib 
* @copyright      Copyright (c) 2007-2010, DesDev, Inc. 
* @license        http://help.dedecms.com/usersguide/license.html 
* @link           http://www.dedecms.com 
*/  

/*>>dede>> 
<name>相关文档</name> 
<type>全局标记</type> 
<for>V55,V56,V57</for> 
<description>自动关连文档标签</description> 
<demo> 
{dede:likearticle row='' col='' titlelen='' infolen=''} 
<a href='[field:arcurl/]'>[field:title/]</a> 
{/dede:likearticle} 
</demo> 
<attributes> 
<iterm>col:分多少列显示（默认为单列）</iterm>  
<iterm>row:返回文档列表总数</iterm> 
<iterm>titlelen:标题长度 等同于titlelength</iterm> 
<iterm>infolen:表示内容简介长度 等同于infolength</iterm> 
<iterm>mytypeid:手工指定要限定的栏目id，用,分开表示多个</iterm> 
<iterm>innertext:单条记录样式(指标签中间的内容)</iterm> 
</attributes>  
>>dede>>*/  

function lib_likearticle(&$ctag,&$refObj)  
{  
global $dsql;  

//属性处理  
$attlist="row|12,titlelen|28,infolen|150,col|1,tablewidth|100,mytypeid|0,byabs|0,imgwidth|120,imgheight|90<span style="color:#ff0000;">,start|0,orderby|null,inword|*,channelid|*</span>";  
FillAttsDefault($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."%";  

$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);  
}  

$limitRow = $row-count($ids);  
$keyword = '';  
<span style="color:#ff0000;">if (empty($refObj->Fields['keywords']) && (! empty($inword)) && ($inword !='*') )  
{  
$refObj->Fields['keywords'] = $inword;  
}</span>  
if(!empty($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 )  
{  

<span style="color:#ff6666;">switch ($orderby)  
{//只能使用指定的列名  
case 'typeid':  
case 'typeid2':  
case 'sortrank':  
case 'channel':  
case 'arcrank':  
case 'click':  
case 'title':  
case 'shorttitle':  
case 'writer':  
case 'pubdate':  
case 'senddate':  

case 'keywords':  
case 'goodpost':  
case 'badpost':  
case 'notpost':  
$orderby = 'arc.' . $orderby ;//连接,要允许使用连接表必须修改  
break;  
default:  
$orderby = 'arc.id';  
}</span>  

$orderquery = " ORDER BY <span style="color:#ff0000;">{$orderby}</span> desc ";       
}  
else {  
$orderquery = " ORDER BY ABS(arc.id-".$arcid.") ";  
}  

<span style="color:#ff0000;">$start = (empty($start)?0:$start);  

$channel_id = '';  
//echo '<br>'.$channelid.'<br>';  
if ( (!empty($channelid)) && preg_match("/^\-?\d+(,\-?\d+)*$/",$channelid) )  
{//指定频道,必须是整数序列  
$channel_id = " channel in($channelid) and ";  
}  
</span>  

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<span style="color:#ff0000;"> $channel_id </span> arc.arcrank>-1 AND ($keyword)  $typeid $orderquery limit <span style="color:#ff0000;">$start</span>, $row";  
}  
else  
{  
if(!empty($typeid)) {  
$typeid = " arc.typeid IN($typeid) AND arc.id<>$arcid ";  
}  
$query = "SELECT arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,  
tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath  
FROM `dede_archives` arc LEFT JOIN `dede_arctype` tp ON arc.typeid=tp.id  
WHERE <span style="color:#ff0000;">$channel_id</span> arc.arcrank>-1 AND  $typeid $orderquery limit <span style="color:#ff0000;">$start</span>,$row";  
}  
// exit($query);  

$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'>\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) $artlist .= "<tr>\r\n";  
for($j=0; $j < $col; $j++)  
{  
if($col>1) $artlist .= "    <td width='$colWidth'>\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']);  
$row['typelink'] = "<a href='".$row['typeurl']."'>".$row['typename']."</a>";  
$row['image'] = "<img src='".$row['picname']."' border='0' width='$imgwidth' height='$imgheight' alt='".preg_replace("#['><]#","",$row['title'])."'>";  
$row['imglink'] = "<a href='".$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()."\r\n";  
}  
//if hasRow  
else  
{  
$artlist .= '';  
}  
if($col>1) $artlist .= "    </td>\r\n";  
}  
//Loop Col  
if($col>1) $i += $col-1;  
if($col>1) $artlist .= "    </tr>\r\n";  
}  
//loop line  
if($col>1) $artlist .= "    </table>\r\n";  
$dsql->FreeResult("al");  
return $artlist;  
}

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为dede:likearticle添加start channelid orderby等参数

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为dede:likearticle添加start channelid orderby等参数

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