DEDECMS中獲取無限欄目子分類的方法

這篇文章主要介紹DEDECMS中獲取無限欄目子分類的方法，文中介紹的非常詳細，具有一定的參考價值，感興趣的小伙伴們一定要看完！

DEDECMS中怎么獲取無限欄目子分類？

做企業網站大部分是使用DEDECMS，今天在給客戶設計網站時，把DEDE自動內鏈和URL全拼格式搞定后，又遇到了個小問題，因為產品分類最多有四級，客戶要求在左側有個彈出式菜單調用各級子分類出來，而DEDECMS默認只能調用一級分類。經過努力，百度+GOOGLE+自己腦袋，終于搞定了這個東西，不敢獨享，發出來給有需要的朋友分享。

首先要把/include/taglib/channerl.lib.php 文件的代碼修改成以下的：

代碼如下:

<?php 
function lib_channel(&$ctag,&$refObj) 
{ 
global $_sys_globals,$envs,$dsql; 
$attlist = “typeid|0,reid|0,row|100,col|1,type|son,currentstyle|”; 
FillAttsDefault($ctag->CAttribute->Items,$attlist); 
extract($ctag->CAttribute->Items, EXTR_SKIP); 
$innertext = $ctag->GetInnerText(); 
if(empty($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 = $dsql->GetOne(“Select reid From ying_arctype where id=’$typeid’ “); 
if(is_array($dbrow)) $reid = $dbrow['reid']; 
} 
$likeType = ”; 
if($type==’top’) 
{ 
$sql = “Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath,description 
From ying_arctype where reid=0 And ishidden<>1 order by sortrank asc limit 0,$row”; 
} 
else if($type==”son”) 
{ 
//if($_sys_globals['typeid']>0) $typeid = $_sys_globals['typeid']; 
if($typeid==0) { 
return ”; 
} 
$sql = “Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath,description 
From ying_arctype where reid=’$typeid’ And ishidden<>1 order by sortrank asc limit 0,$row”; 
} 
else if($type==”self”) 
{ 
if($reid==0) { 
return ”; 
} 
$sql = “Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath,description 
From ‘ying_arctype’ where reid=’$reid’ And ishidden<>1 order by sortrank asc limit 0,$row”; 
} 
//And id<>’$typeid’ 
$dtp2 = new DedeTagParse(); 
$dtp2->SetNameSpace(“field”,”[","]“); 
$dtp2->LoadSource($innertext); 
$dsql2 = clone $dsql; 
$dsql->SetQuery($sql); 
$dsql->Execute(); 
$line = $row; 
$GLOBALS['autoindex'] = 0; 
for($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=$dsql->GetArray()) 
{ 
if($type==’self’ && $row['id']==$typeid) //處理同級欄目中，當前欄目的樣式 
{ 
if($currentstyle!=”) 
{ 
$linkOkstr = $currentstyle; 
$row['typelink'] = GetOneTypeUrlA($row); 
$linkOkstr = str_replace(“~typelink~”,$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 .= “</dd>\r\n”; 
$GLOBALS['autoindex']++; 
}//Loop Col 
if($col>1) 
{ 
$i += $col – 1; 
$likeType .= ” </dl>\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['typeid']>0) $typeid = $_sys_globals['typeid']; 
if($typeid==0) { 
return ”; 
} 
$sql = “Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,moresite,siteurl,sitepath,description 
From ying_arctype where reid=’$typeid’ And ishidden<>1 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 < $line;$i++) 
{ 
if($col>1) $likeType .= “<dl>\r\n”; 
for($j=0;$j<$col;$j++) 
{ 
if($col>1) $likeType .= “<dd>\r\n”; 
if($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) $likeType .= “</dd>\r\n”; 
}//Loop Col 
if($col>1) 
{ 
$i += $col – 1; 
$likeType .= ” </dl>\r\n”; 
} 
}//Loop for $i 
reset($dsql3); 
$dsql2->FreeResult(); 
return $likeType; 
} 
?>

在模板里面用 [field:sonchannel0] [/field:sonchannel0] 調用，這個是用來取子欄目用得（使用【sonchannel+數字】作為標簽名是為了防止嵌套的時候無法正確解析標簽），這個的作用就是當你的欄目有很多子欄目無限分級的時候方便你取子欄目的。實例一下：

代碼如下:

<ul id="left_nav"> 
{dede:channel type='son' typeid='16'} 
<li><a href="[field:typelink/]“>[field:typename/]</a> 
<ul> 
[field:sonchannel0] 
<li><a href="[field:typelink/]“>[field:typename/]</a> 
<ul> 
[field:sonchannel1] 
<li><a href="[field:typelink/]“>[field:typename/]</a> 
<ul> 
[field:sonchannel2] 
<li><a href="[field:typelink/]“>[field:typename/]</a> 
<ul> 
[field:sonchannel3] 
<li><a href="[field:typelink/]“>[field:typename/]</a></li> 
[/field:sonchannel3] 
</ul> 
</li> 
[/field:sonchannel2] 
</ul> 
</li> 
[/field:sonchannel1] 
</ul> 
</li> 
[/field:sonchannel0] 
</ul> 
</li> 
{/dede:channel} 
</ul>

以上是DEDECMS中獲取無限欄目子分類的方法的所有內容，感謝各位的閱讀！希望分享的內容對大家有幫助，更多相關知識，歡迎關注億速云行業資訊頻道！