文章介绍
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[ ypeid]!=0) { $typeid = $envs[ ypeid]; $reid = $envs[ eid]; }else{ $reid=0; } if($type==\||$type==sun) $type="son"; if($innertext==\) $innertext = GetSysTemplets("channel_list.htm"); if($reid==0 && $typeid>0) { $dbrow = $dsql->GetOne("Select reid From dede_arctype where "); if(is_array($dbrow)) $reid = $dbrow[ eid]; } $likeType = \; if($type== op) { $sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath,descriptionFrom dede_arctype where reid=0 And ishidden1 order by sortrank asc limit 0,$row"; } else if($type=="son") { //if($_sys_globals[ ypeid]>0) $typeid = $_sys_globals[ ypeid]; if($typeid==0) { return \; } $sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath,descriptionFrom dede_arctype where reid=$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] = $row[ el] = \;if($needRel){$row[sonids] = GetSonIds($row[id], 0, false);if($row[sonids]==\) $row[ el] = \;else $row[ el] = " rel=dropmenu{$row[id]}\";}//处理同级栏目中，当前栏目的样式if( ($row[id]==$typeid || ($topid==$row[id] && $type== op) ) && $currentstyle!=\ ){if($currentstyle!=\){$linkOkstr = $currentstyle;$row[ ypelink] = GetOneTypeUrlA($row);$linkOkstr = str_replace("~rel~",$row[ el],$linkOkstr);$linkOkstr = str_replace("~id~",$row[id],$linkOkstr);$linkOkstr = str_replace("~typelink~",$row[ ypelink],$linkOkstr);$linkOkstr = str_replace("~typename~",$row[ ypename],$linkOkstr);$likeType .= $linkOkstr;}}else{$row[ ypelink] = $row[ ypeurl] = GetOneTypeUrlA($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"; } }//Loop for $i reset($dsql2); $dsql->FreeResult(); return $likeType;}function lib_channel_son($ctag,$typeid = 0,$dsql2){ $attlist = "row|100,col|1,currentstyle|"; FillAttsDefault($ctag->CAttribute->Items,$attlist); extract($ctag->CAttribute->Items, EXTR_SKIP); $innertext = $ctag->GetInnerText(); $dsql3 = clone $dsql2; $likeType = \; //if($_sys_globals[ ypeid]>0) $typeid = $_sys_globals[ ypeid]; if($typeid==0) { return \; } $sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath,descriptionFrom dede_arctype where reid=$typeid And ishidden1 order by sortrank asc limit 0,$row"; //And id$typeid $dtp2 = new DedeTagParse(); $dtp2->SetNameSpace("field","[","]"); $dtp2->LoadSource($innertext); $dsql2->SetQuery($sql); $dsql2->Execute(); $line = $row; for($i=0;$i 1) $likeType .= "\r\n"; for($j=0;$j1) $likeType .= "\r\n"; if($row=$dsql2->GetArray()) {$row[ ypelink] = $row[ ypeurl] = GetOneTypeUrlA($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 .= " \r\n"; } }//Loop for $i reset($dsql3); $dsql2->FreeResult(); return $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] {/dede:channel}
