dedeCMS中单独调用子栏目模板和子栏目的文章时修改源代码给channel和chanenartllist加上limit

在网站文件中找到include-taglib-chanel.lib.php,和chaneartllist.lib.php

下载用php的IDE打开，

chanel.php加入limit属性修改如下

<?php
/**
 * 获取栏目列表标签
 *
 * @version        $Id: channel.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>频道标签</name>
<type>全局标记</type>
<for>V55,V56,V57</for>
<description>用于获取栏目列表</description>
<demo>
{dede:channel type='top' row='8' currentstyle="<li><a href='~typelink~' class='thisclass'>~typename~</a> </li>"}
 <li><a href='[field:typelink/]'>[field:typename/]</a> </li>
{/dede:channel}
</demo>
<attributes>
    <iterm>typeid:栏目ID</iterm>
    <iterm>reid:上级栏目ID</iterm>
    <iterm>row:调用栏目数</iterm>
    <iterm>col:分多少列显示（默认为单列）</iterm>
    <iterm>type:son表示下级栏目,self表示同级栏目,top*栏目</iterm>
    <iterm>currentstyle:应用样式</iterm>
</attributes>
>>dede>>*/

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

    $attlist = "typeid|0,reid|0,row|100,col|1,type|son,currentstyle|,cacheid|,limit|";
    FillAttsDefault($ctag->CAttribute->Items,$attlist);
    extract($ctag->CAttribute->Items, EXTR_SKIP);
    $innertext = $ctag->GetInnerText();
    $line = empty($row) ? 100 : $row;
    $limit=empty($limit)?0:$limit;
    $likeType = '';
    //读取固定的缓存块
    $cacheid = trim($cacheid);
    if($cacheid !='') {
        $likeType = GetCacheBlock($cacheid);
        if($likeType != '') return $likeType;
    }

    $reid = 0;
    $topid = 0;
    //如果属性里没指定栏目id，从引用类里获取栏目信息
    if(empty($typeid))
    {
        if( isset($refObj->TypeLink->TypeInfos['id']) )
        {
            $typeid = $refObj->TypeLink->TypeInfos['id'];
            $reid = $refObj->TypeLink->TypeInfos['reid'];
            $topid = $refObj->TypeLink->TypeInfos['topid'];
        }
        else {
          $typeid = 0;
      }
    }
    //如果指定了栏目id，从数据库获取栏目信息
    else
    {
        $row2 = $dsql->GetOne("SELECT * FROM `#@__arctype` WHERE id='$typeid' ");
        $typeid = $row2['id'];
        $reid = $row2['reid'];
        $topid = $row2['topid'];
        $issetInfos = true;
    }

    if($type=='' || $type=='sun') $type='son';
    if($innertext=='') $innertext = GetSysTemplets("channel_list.htm");

    if($type=='top')
    {
        $sql = "SELECT id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath
          From `#@__arctype` WHERE reid=0 And ishidden<>1 order by sortrank asc limit $limit,$line ";
    }
    else if($type=='son')
    {
        if($typeid==0) return '';
        $sql = "SELECT id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath
          From `#@__arctype` WHERE reid='$typeid' And ishidden<>1 order by sortrank asc limit $limit,$line ";
    }
    else if($type=='self')
    {
        if($reid==0) return '';
        $sql = "SELECT id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath
            FROM `#@__arctype` WHERE reid='$reid' And ishidden<>1 order by sortrank asc limit $limit,$line ";
    }
    //And id<>'$typeid'
    $needRel = false;
    $dtp2 = new DedeTagParse();
    $dtp2->SetNameSpace('field','[',']');
    $dtp2->LoadSource($innertext);
    //检查是否有子栏目，并返回rel提示（用于二级菜单）
    if(preg_match('#:rel#', $innertext)) $needRel = true;

    if(empty($sql)) return '';
    $dsql->SetQuery($sql);
    $dsql->Execute();

    $totalRow = $dsql->GetTotalRow();
    //如果用子栏目模式，当没有子栏目时显示同级栏目
    if($type=='son' && $reid!=0 && $totalRow==0)
    {
        $sql = "SELECT id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath
            FROM `#@__arctype` WHERE reid='$reid' And ishidden<>1 order by sortrank asc limit 0, $line ";
        $dsql->SetQuery($sql);
      $dsql->Execute();
    }
    $GLOBALS['autoindex'] = 0;
    for($i=0;$i < $line;$i++)
    {
        if($col>1) $likeType .= "<dl>\r\n";
        for($j=0; $j<$col; $j++)
        {
            if($col>1) $likeType .= "<dd>\r\n";
            if($row=$dsql->GetArray())
            {
                $row['sonids'] = $row['rel'] = '';
                if($needRel)
                {
                    $row['sonids'] = GetSonIds($row['id'], 0, false);
                    if($row['sonids']=='') $row['rel'] = '';
                    else $row['rel'] = " rel='dropmenu{$row['id']}'";
                }
                //处理同级栏目中，当前栏目的样式
                if( ($row['id']==$typeid || ($topid==$row['id'] && $type=='top') ) && $currentstyle!='' )
                {
                    $linkOkstr = $currentstyle;
                    $row['typelink'] = GetOneTypeUrlA($row);
                    $linkOkstr = str_replace("~rel~",$row['rel'],$linkOkstr);
                    $linkOkstr = str_replace("~id~",$row['id'],$linkOkstr);
                    $linkOkstr = str_replace("~typelink~",$row['typelink'],$linkOkstr);
                    $linkOkstr = str_replace("~typename~",$row['typename'],$linkOkstr);
                    $likeType .= $linkOkstr;
                }
                else
                {
                    $row['typelink'] = $row['typeurl'] = GetOneTypeUrlA($row);
                    if(is_array($dtp2->CTags))
                    {
                        foreach($dtp2->CTags as $tagid=>$ctag)
                        {
                            if(isset($row[$ctag->GetName()])) $dtp2->Assign($tagid,$row[$ctag->GetName()]);
                        }
                    }
                    $likeType .= $dtp2->GetResult();
                }
            }
            if($col>1) $likeType .= "</dd>\r\n";
            $GLOBALS['autoindex']++;
        }
        //Loop Col
        if($col>1)
        {
            $i += $col - 1;
            $likeType .= "    </dl>\r\n";
        }
    }
    //Loop for $i
    $dsql->FreeResult();
    if($cacheid !='') {
        WriteCacheBlock($cacheid, $likeType);
    }
    return $likeType;
}

这时候就可以在模板中调用了

比如

{dede:channel limit="0" row="1"}
                             <dt><h3><a target="_blank" href='[field:typelink/]'>[field:typename/]</a></h3></dt>
                            {/dede:channel}

这段代码表示调用从0开始，row为1行的子栏目，如下一个就将limit=“0”改为limit=“1”即可。

下面是chanelartlist中添加limit属性的源代码

<?php if(!defined('DEDEINC')) exit('Request Error!');
/**
* 获取当前频道的下级栏目的内容列表标签
*
* @version $Id: channelartlist.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>频道文档</name>
<type>全局标记</type>
<for>V55,V56,V57</for>
<description>获取当前频道的下级栏目的内容列表标签</description>
<demo>
{dede:channelartlist row=6}
<dl>
<dt><a href='{dede:field name='typeurl'/}'>{dede:field name='typename'/}</a></dt>
<dd>
{dede:arclist titlelen='42' row='10'} <ul class='autod'>
<li><a href="[field:arcurl /]">[field:title /]</a></li>
<li>([field:pubdate function="MyDate('m-d',@me)"/])</li>
</ul>
{/dede:arclist}
</dl>
{/dede:channelartlist}
</demo>
<attributes>
<iterm>typeid:频道ID</iterm>
<iterm>row:获取的栏目返回值</iterm>
</attributes>
>>dede>>*/

require_once(DEDEINC.'/arc.partview.class.php');

function lib_channelartlist(&$ctag,&$refObj)
{
global $dsql,$envs,$_sys_globals;

//处理标记属性、innertext
$attlist = 'typeid|0,row|20,cacheid|,limit|,type|'; //这边加个limit变量 type 我是想实现 在子栏目下调用 同级子栏目的信息
FillAttsDefault($ctag->CAttribute->Items,$attlist);
extract($ctag->CAttribute->Items, EXTR_SKIP);
$innertext = trim($ctag->GetInnerText());
$artlist = '';
//读取固定的缓存块
$cacheid = trim($cacheid);
if($cacheid !='') {
$artlist = GetCacheBlock($cacheid);
if($artlist!='') return $artlist;
}

if(empty($typeid))
{
$typeid = ( !empty($refObj->TypeLink->TypeInfos['id']) ? $refObj->TypeLink->TypeInfos['id'] : 0 );
}

if($innertext=='') $innertext = GetSysTemplets('part_channelartlist.htm');
$totalnum = $row;
if(empty($totalnum)) $totalnum = 20;

//获得类别ID总数的信息
$typeids = array();
if($type=='reid') //2011.7.5 调用上级目录下的子栏目内容
{

$reid = $refObj->TypeLink->TypeInfos['reid'];

$tpsql = " reid='$reid' AND ispart<>2 AND ishidden<>1 ";
}
else if($typeid==0 || $typeid=='top') {

$tpsql = " reid=0 AND ispart<>2 AND ishidden<>1 AND channeltype>0 ";
}
else
{

if(!preg_match('#,#', $typeid)) {
$tpsql = " reid='$typeid' AND ispart<>2 AND ishidden<>1 ";
}
else {
$tpsql = " id IN($typeid) AND ispart<>2 AND ishidden<>1 ";
}
}

$limit = trim(preg_replace('#limit#is', '', $limit)); //增加limit标签
if($limit!='') $limitsql = " LIMIT $limit "; //如果limit为空就以 row变量的默认值 限制
else $limitsql = " LIMIT 0,$totalnum";

$dsql->SetQuery("SELECT id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath
FROM `dede_arctype` WHERE $tpsql ORDER BY sortrank ASC $limitsql");
$dsql->Execute();
while($row = $dsql->GetArray()) {
$typeids[] = $row;
}

if(!isset($typeids[0])) return '';

$GLOBALS['itemindex'] = 0;
$GLOBALS['itemparity'] = 1;
for($i=0;isset($typeids[$i]);$i++)
{
$GLOBALS['itemindex']++;
$pv = new PartView($typeids[$i]['id']);
$pv->Fields['typeurl'] = GetOneTypeUrlA($typeids[$i]);

$pv->SetTemplet($innertext,'string');
$artlist .= $pv->GetResult();
$GLOBALS['itemparity'] = ($GLOBALS['itemparity']==1 ? 2 : 1);
}
//注销环境变量，以防止后续调用中被使用
$GLOBALS['envs']['typeid'] = $_sys_globals['typeid'];
$GLOBALS['envs']['reid'] = '';
if($cacheid !='') {
WriteCacheBlock($cacheid, $artlist);
}
return $artlist;
}

使用方法如下：

{dede:channelartlist limit='0,1'}

                                 {dede:arclist row='6' titlelen='42'}
                                 <dd><a target="_blank" href="[field:arcurl/]"  style="">[field:title/]</a></dd>
                                   {/dede:arclist}

                            {/dede:channelartlist}

从栏目的第一个子栏目读取6篇文章

如需读取第二个子栏目的文章，limit=“1,1”，第三为：limit=“2,1”

依次类推。

经验分享！不谢！