How to get unlimited column subcategories in DEDECMS

How to get unlimited column subcategories in DEDECMS?

Most corporate websites use DEDECMS. When I was designing a website for a client today, after finishing the DEDE automatic internal linking and full URL spelling formats, I encountered a small problem because there are the most product categories. There are four levels. The customer requested that there be a pop-up menu on the left to call sub-categories at each level, but DEDECMS can only call the first-level category by default. After hard work, Baidu GOOGLE finally figured out this thing. I didn't dare to keep it to myself, so I sent it out to share with friends in need.

Recommended learning: Dream Weaver cms

First, modify the code of the /include/taglib/channerl.lib.php file to the following:

The code is as follows:

<?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[&#39;typeid&#39;]!=0) 
{ 
$typeid = $envs[&#39;typeid&#39;]; 
$reid = $envs[&#39;reid&#39;]; 
}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[&#39;reid&#39;]; 
} 
$likeType = ”; 
if($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[&#39;typeid&#39;]>0) $typeid = $_sys_globals[&#39;typeid&#39;]; 
if($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; 
$GLOBALS[&#39;autoindex&#39;] = 0; 
for($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’ && $row[&#39;id&#39;]==$typeid) //处理同级栏目中，当前栏目的样式 
{ 
if($currentstyle!=”) 
{ 
$linkOkstr = $currentstyle; 
$row[&#39;typelink&#39;] = GetOneTypeUrlA($row); 
$linkOkstr = str_replace(“~typelink~”,$row[&#39;typelink&#39;],$linkOkstr); 
$linkOkstr = str_replace(“~typename~”,$row[&#39;typename&#39;],$linkOkstr); 
$likeType .= $linkOkstr; 
} 
}else 
{ 
$row[&#39;typelink&#39;] = $row[&#39;typeurl&#39;] = GetOneTypeUrlA($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[&#39;id&#39;],$dsql2)); 
} 
} 
} 
$likeType .= $dtp2->GetResult(); 
} 
} 
if($col>1) $likeType .= “</dd>\r\n”; 
$GLOBALS[&#39;autoindex&#39;]++; 
}//Loop Col 
if($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[&#39;typeid&#39;]>0) $typeid = $_sys_globals[&#39;typeid&#39;]; 
if($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[&#39;typelink&#39;] = $row[&#39;typeurl&#39;] = GetOneTypeUrlA($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[&#39;id&#39;],$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; 
} 
?>

Use [field:sonchannel0] [/field:sonchannel0] to call in the template. This is used to get the sub-column (using [sonchannel number] as the label name is to prevent embedding The tags cannot be parsed correctly when applied). The purpose of this is to facilitate you to select sub-columns when your column has many sub-columns with infinite levels. Let’s take an example:

The code is as follows:

<ul id="left_nav"> 
{dede:channel type=&#39;son&#39; typeid=&#39;16&#39;} 
<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>

Just change the number in the above typeid to the ID of your major category. Because I couldn’t find it in the DEDE official forum, I posted it here. I hope it can be helpful. Convenient and useful.

Note: Please make a backup before modifying the file in case of errors. Some quotation marks in the above code may be automatically converted to full-width. Please modify it to half-width, or you can ask Xiao Han to obtain the modified file.

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