dede自动动获取上级栏目的标题 关键字 描述

<title>{dede:field.seotitle/}</title>
<meta name="keywords" content="{dede:field name='keywords'/}" />
<meta name="description" content="{dede:field name='description' function='html2text(@me)'/}" />

     //载入类目信息
     $query = "SELECT tp.*,ch.typename as ctypename,ch.addtable,ch.issystem FROM `idea_arctype` tp left join `idea_channeltype` ch
     on ch.id=tp.channeltype  WHERE tp.id='$typeid' ";
     if($typeid > 0)
     {
         $this->TypeInfos = $this->dsql->GetOne($query);
//填空
$this->TypeInfos['keywords'] = $this->TypeInfos['keywords'] ? $this->TypeInfos['keywords'] : $this->GetTrueInfos('keywords');
$this->TypeInfos['seotitle'] = $this->TypeInfos['seotitle'] ? $this->TypeInfos['seotitle'] : $this->GetTrueInfos('seotitle');
$this->TypeInfos['description'] = $this->TypeInfos['description'] ? $this->TypeInfos['description'] : $this->GetTrueInfos('description');

         if(is_array($this->TypeInfos))
         {
             $this->TypeInfos['tempindex'] = MfTemplet($this->TypeInfos['tempindex']);
             $this->TypeInfos['templist'] = MfTemplet($this->TypeInfos['templist']);
             $this->TypeInfos['temparticle'] = MfTemplet($this->TypeInfos['temparticle']);
         }
     }

//为了让某些栏目的关键字描述等不能为空 
   function GetTrueInfos($info = 'seotitle') {		
	$infos = array('reid'=>$this->TypeID,$info=>'');
	while(empty($infos[$info]) && $infos['reid']!=0) {
		$this->dsql->SetQuery("SELECT reid,".$info."  FROM idea_arctype WHERE id='".$infos['reid']."'");
   		$infos = $this->dsql->GetOne();
	}
	if(empty($infos[$info])) {
		if($info == "seotitle") return $GLOBALS['cfg_webname'];
		if($info == "keywords") return $GLOBALS['cfg_keywords'];
		if($info == "description") return $GLOBALS['cfg_description'];
	} 
   	return $infos[$info];
   }