织梦dedecms arclist调用副栏目不显示的解决办法。打开/include/taglib/arclist.lib.php，代码约位于295-296行,查找以下两行代码：if($CrossID=='') $orwheres[] = ' arc.typeid IN ('.GetSonIds($typeid).')';else $orwheres[] = ' arc.typeid IN ('.GetSonIds($typeid).','.$CrossID.')';
将其替换成以下代码：$vicewheres = "";$typeids = explode(",",GetSonIds($typeid));$crossids = explode(",",$CrossID);$typeidss = array_merge($typeids,$crossids);$typeidss = array_unique($typeidss);foreach($typeidss as $tid){$liketypeid2 = ",".$tid.",";$vicewheres.= " or CONCAT(',',arc.typeid2,',') like '%$liketypeid2%' ";}if($CrossID==''){if($vicewheres!="")$orwheres[] = ' (arc.typeid in ('.GetSonIds($typeid).') '.$vicewheres.') ';else$orwheres[] = ' arc.typeid in ('.GetSonIds($typeid).') ';}else{if($vicewheres!="")$orwheres[] = ' (arc.typeid in ('.GetSonIds($typeid).','.$CrossID.') '.$vicewheres.') ';else$orwheres[] = ' arc.typeid in ('.GetSonIds($typeid).','.$CrossID.') ';}
这种办法可以解决typeid="2"的情况下不显示副栏目的问题， 如果typeid=“2,3,8”，有多个栏目需要调用副栏目就不行了 怎么解决这个问题，找到262行， $orwheres[] = " arc.typeid IN ($typeid) "; 直接替换为：$vicewheres = "";foreach($typeid as $tid){$liketypeid2 = ",".$tid.",";$vicewheres.= " or CONCAT(',',arc.typeid2,',') like '%$liketypeid2%' ";}if($vicewheres!="")$orwheres[] = " (arc.typeid in ($typeid) $vicewheres) ";else$orwheres[] = " arc.typeid in ($typeid) ";问题产生的原因，看下arclist.lib.php原始代码：（ typeid为主栏目id， typeid2为副栏目id）
找到246行：//指定了多个栏目时，不再获取子类的id if( preg_match('#,#', $typeid) ) //如果typeid字段匹配逗号， 就是说typeid调用多个栏目，例如：typeid=“2,3,8”{//指定了getall属性或主页模板例外if($getall==1 || empty($refObj->Fields['typeid'])){$typeids = explode(',', $typeid);foreach($typeids as $ttid) {$typeidss[] = GetSonIds($ttid);}$typeidStr = join(',', $typeidss);$typeidss = explode(',', $typeidStr);$typeidssok = array_unique($typeidss);$typeid = join(',', $typeidssok);}$orwheres[] = " arc.typeid IN ($typeid)"; //导致typeid='2,3,8'情况下不能调用副栏目问题产生的地方}else //如果typeid不匹配逗号，就是调用一个栏目 例如 typeid="2"{
//处理交叉栏目$CrossID = '';if($ctag->GetAtt('cross')=='1'){$arr = $dsql->GetOne("SELECT `id`,`topid`,`cross`,`crossid`,`ispart`,`typename` FROM `dede_arctype` WHERE id='$typeid' ");if( $arr['cross']==0 || ( $arr['cross']==2 && trim($arr['crossid']=='') ) ){$orwheres[] = ' arc.typeid IN ('.GetSonIds($typeid).')';}else{$selquery = '';if($arr['cross']==1) {$selquery = "SELECT id,topid FROM `dede_arctype` WHERE typename LIKE '{$arr['typename']}' ANDid<>'{$typeid}' AND topid<>'{$typeid}' ";}else {$arr['crossid'] = preg_replace('#[^0-9,]#', '', trim($arr['crossid']));if($arr['crossid']!='') $selquery = "SELECT id,topid FROM `dede_arctype` WHERE id IN('{$arr['crossid']}') AND id<>'{$typeid}' AND topid<>'{$typeid}' ";}if($selquery!=''){$dsql->SetQuery($selquery);$dsql->Execute();while($arr = $dsql->GetArray()){$CrossID .= ($CrossID=='' ? $arr['id'] : ','.$arr['id']);}}}}if($CrossID=='') $orwheres[] = ' arc.typeid IN ('.GetSonIds($typeid).')';else $orwheres[] = ' arc.typeid IN ('.GetSonIds($typeid).','.$CrossID.')'; //导致typeid='2'情况下不能调用副栏目问题产生的地方}
