How to obtain the sub-column of Dedecms

How to obtain the dedecms sub-column?

dedecms5.7 Get the label of the top column name

Recommended learning: 梦Weavercms

The following is the method of calling the top column name :

Method 1:

{dede:field.typeid runphp=’yes’}$ID = @me; 
$sql = “SELECT * FROM `dede_arctype` WHERE id=$ID”;
$query = mysql_query($sql);$row=mysql_fetch_array($query); 
$relID = “$row[reid]“; if($relID == 0) {@me = $row[typename];}
else{$sql = “SELECT `typename` FROM `dede_arctype` WHERE id=$relID”;
$query = mysql_query($sql);$row=mysql_fetch_array($query); 
@me = $row[typename];}{/dede:field.typeid}

This method statement is a bit long.

Method 2:

{dede:field.title  runphp='yes'}
list($toptype,$sontype)=split('/',@me);@me=$toptype;
{/dede:field.title}

Method 3:

{dede:field.typeid runphp='yes'}
$ID = @me; $sql = "SELECT * FROM `dede_arctype` WHERE id=$ID";
$query = mysql_query($sql);$row=mysql_fetch_array($query); 
$relID = "$row[reid]"; $topID="$row[topid]"; 
if($relID == 0) {@me = $row[typename];}
else{$sql = "SELECT `typename` FROM `dede_arctype` WHERE id=$topID";
$query = mysql_query($sql);$row=mysql_fetch_array($query); 
@me = $row[typename];}{/dede:field.typeid}

Method 4 (recommended):

Open include/helpers/extend.helper.php and add A function:

/**
 *  获取指定栏目id的顶级栏目的名称
 *
 * @return     string
 */
if ( ! function_exists('getTopChannelName'))
{
function getTopChannelName($id) {
   global $dsql;
        $typeinfo = $dsql->GetOne("SELECT * FROM `dede_arctype` WHERE id='{$id}'");
        if($typeinfo['reid']==0) return $typeinfo['typename'];
        else return getTopChannelName($typeinfo['reid']);
}
}

Use it like this on the list page: {dede:field name='id' function='getTopChannelName(@me)'/}

Use it like this on the content page: {dede :field name='typeid' function='getTopChannelName(@me)'/}

Attached is to get the url of the top column:

Open include/helpers/extend.helper.php and add one Function:

/**
 *  获取指定栏目id的顶级栏目的url
 *
 * @return     string
 */
if ( ! function_exists('getTopChannelUrl'))
{
function getTopChannelUrl($id) {
   global $dsql;
        $typeinfo = $dsql->GetOne("SELECT * FROM `dede_arctype` WHERE id='{$id}'");
        if($typeinfo['reid']==0) return GetOneTypeUrlA($typeinfo);
        else return getTopChannelUrl($typeinfo['reid']);
}
}

Usage method is the same as above.

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