经常会遇到需要调用多个指定的顶级栏目导航，那如何实现呢？关于DEDECMS实现嵌套获取栏目及其子栏目列表的问题，在论坛找到了以前版本的修改方法，于是修改了一下，现在分享给大伙。请看实例代码：
修改文件：\include\taglib目录下的channel.lib.php，请将以下代码全部复制替换上述文件。
以下为引用的内容：
CAttribute->Items,$attlist); extract($ctag->CAttribute->Items, EXTR_SKIP); $innertext = $ctag->GetInnerText(); $cacheid = trim($cacheid); if($cacheid !='') { $likeType = GetCacheBlock($cacheid); if($likeType != '') return $likeType; } $reid = 0; $topid = 0; if(empty($typeid) && $envs['typeid']!=0) { $typeid = $envs['typeid']; $reid = $envs['reid']; }else{ $reid=0; } if($type==''||$type=='sun') $type="son"; if($innertext=='') $innertext = GetSysTemplets("channel_list.htm"); if($reid==0 && $typeid>0) { $dbrow = $dsql->GetOne("Select reid From dede_arctype where id='$typeid' "); if(is_array($dbrow)) $reid = $dbrow['reid']; } $likeType = ''; if($type=='top') { $sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath,description From dede_arctype where reid=0 And ishidden1 order by sortrank asc limit 0,$row"; } else if($type=="son") { //if($_sys_globals['typeid']>0) $typeid = $_sys_globals['typeid']; if($typeid==0) { return ''; } $sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath,description From dede_arctype where reid='$typeid' And ishidden1 order by sortrank asc limit 0,$row"; } else if($type=="self") { if($reid==0) { return ''; } $sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath,description From `dede_arctype` where reid='$reid' And ishidden1 order by sortrank asc limit 0,$row"; } //And id'$typeid' $needRel = false; $dtp2 = new DedeTagParse(); $dtp2->SetNameSpace("field","[","]"); $dtp2->LoadSource($innertext); $dsql2 = clone $dsql; $dsql->SetQuery($sql); $dsql->Execute(); $line = $row; //检查是否有子栏目，并返回rel提示（用于二级菜单） if(ereg(':rel', $innertext)) $needRel = true; if(empty($sql)) return ''; $dsql->SetQuery($sql); $dsql->Execute(); $totalRow = $dsql->GetTotalRow(); $GLOBALS['autoindex'] = 0; for($i=0;$i 1) $likeType .= "- \r\n"; for($j=0;$j1) $likeType .= "
- \r\n"; if($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') ) && $currentstyle!='' ) { if($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()]); } elseif (preg_match('/^sonchannel[0-9]*$/',$ctag->GetName())) { $dtp2->Assign($tagid,lib_channel_son($ctag,$row['id'],$dsql2)); } } } $likeType .= $dtp2->GetResult(); } } if($col>1) $likeType .= " \r\n"; $GLOBALS['autoindex']++; }//Loop Col if($col>1) { $i += $col - 1; $likeType .= "
- \r\n"; for($j=0;$j1) $likeType .= "
- \r\n"; if($row=$dsql2->GetArray()) { $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()]); } elseif (preg_match('/^sonchannel[0-9]*$/',$ctag->GetName())) { $dtp2->Assign($tagid,lib_channel_son($ctag,$row['id'],$dsql3)); } } } $likeType .= $dtp2->GetResult(); } if($col>1) $likeType .= " \r\n"; }//Loop Col if($col>1) { $i += $col - 1; $likeType .= "
注：如果你安装的DedeCMS使用的表前缀进行修改过，需要把上面代码中的 dede_arctype 前缀修改掉才行。
模板调用 [field:sonchannel0] [/field:sonchannel0] 这个是用来取子栏目用得(使用[sonchannel+数字] 作为标签名是为了防止嵌套的时候无法正确解析标签)
这个的作用就是当你的栏目有很多子栏目 无限分级的时候方便你取子栏目的
例子
{dede:channel type='son' typeid='22'} [field:typename/] - [field:sonchannel0]
- [field:typename/] [field:sonchannel1]
- ---[field:typename/] [field:sonchannel2]
- ===[field:typename/] [field:sonchannel3]
- ===[field:typename/] [/field:sonchannel3] [/field:sonchannel2] [/field:sonchannel1] [/field:sonchannel0]