织梦5.7bug修复:后台联动无法添加二级栏目的办法

我在使用织梦dedecms的分类信息的时候需要添加联动属性，结果去添加联动属性的时候，发现只可以添加一级联动和三级联动。

二级联动无法添加了。

在自己的5.6的后台添加的时候，发现是可以的。估计又是5.7版本的bug了。

    于是分析了代码，和大家分享下解决的办法：
首先我们找到我们的模板源码下面的 dede/stepselect_main.php  这个文件，

将这段代码
 

else if($action=='addenum_save'){    if(empty($ename) || empty($egroup))    {         Showmsg("类别名称或组名称不能为空！","-1");         exit();    }    if($issign == 1 || $topvalue == 0)    {        $enames = explode(',', $ename);        foreach($enames as $ename)        {            $arr = $dsql->GetOne("SELECT * FROM `dede_sys_enum` WHERE egroup='$egroup' AND (evalue MOD 500)=0 ORDER BY disorder DESC ");            if(!is_array($arr)) $disorder = $evalue = ($issign==1 ? 1 : 500);            else $disorder = $evalue = $arr['disorder'] + ($issign==1 ? 1 : 500);                           $dsql->ExecuteNoneQuery("INSERT INTO `dede_sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)                                    VALUES('$ename','$evalue','$egroup','$disorder','$issign'); ");        }        WriteEnumsCache($egroup);                                                                 ShowMsg("成功添加枚举分类！".$dsql->GetError(), $ENV_GOBACK_URL);        exit();    } else if ($issign == 2 && $topvalue != 0)    {        $minid = $topvalue;        $maxnum = 500; // 三级子类最多500个        $enames = explode(',', $ename);        foreach ($enames as $ename)        {            $arr = $dsql->GetOne("SELECT * FROM `dede_sys_enum` WHERE egroup='$egroup' AND evalue LIKE '$topvalue.%%%' ORDER BY evalue DESC ");            if(!is_array($arr))            {                $disorder = $minid;                $evalue = $minid.'.001';            }            else            {                $disorder = $minid;                preg_match("#([0-9]{1,})/.([0-9]{1,})#", $arr['evalue'], $matchs);                $addvalue = $matchs[2] + 1;                $addvalue = sprintf("d", $addvalue);                $evalue = $matchs[1].'.'.$addvalue;}            $sql = "INSERT INTO `dede_sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)                                    VALUES('$ename','$evalue','$egroup','$disorder','$issign'); ";            // echo $sql;exit;            $dsql->ExecuteNoneQuery($sql);        }        // echo $minid;        WriteEnumsCache($egroup);        ShowMsg("成功添加枚举分类！", $ENV_GOBACK_URL);        exit();    } else {        $minid = $topvalue;        $maxid = $topvalue + 500;        $enames = explode(',', $ename);        foreach($enames as $ename)        {            $arr = $dsql->GetOne("SELECT * FROM `dede_sys_enum` WHERE egroup='$egroup' AND evalue>$minid AND evalue<$maxid ORDER BY evalue DESC ");            if(!is_array($arr))            {                $disorder = $evalue = $minid+1;            }            else            {                $disorder = $arr['disorder']+1;                $evalue = $arr['evalue']+1;            }            $dsql->ExecuteNoneQuery("INSERT INTO `dede_sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)                          VALUES('$ename','$evalue','$egroup','$disorder','$issign'); ");        }        WriteEnumsCache($egroup);        ShowMsg("成功添加枚举分类！", $ENV_GOBACK_URL);        exit();    }}

 

替换为：
 

else if($action=='addenum_save'){   if(empty($ename) || empty($egroup)) {      Showmsg("类别名称或组名称不能为空！","-1");      exit();   }   if($issign==1 || $topvalue==0)   {       $enames = explode(',', $ename);       foreach($enames as $ename)       {        $arr = $dsql->GetOne("Select * From `dede_sys_enum` where egroup='$egroup' And (evalue mod 500)=0 order by evalue desc ");         if(!is_array($arr)) $disorder = $evalue = ($issign==1 ? 1 : 500);     else $disorder = $evalue = $arr['disorder'] + ($issign==1 ? 1 : 500);         $dsql->ExecuteNoneQuery("Insert into `dede_sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)                                    values('$ename','$evalue','$egroup','$disorder','$issign'); ");        }        WriteEnumsCache($egroup);      ShowMsg("成功添加枚举分类！".$dsql->GetError(), $ENV_GOBACK_URL);    exit();  }  else  {    $minid = $topvalue;    $maxid = $topvalue + 500;    $enames = explode(',', $ename);       foreach($enames as $ename)       {     $arr = $dsql->GetOne("Select * From `dede_sys_enum` where egroup='$egroup' And evalue>$minid And evalue<$maxid order by evalue desc ");     if(!is_array($arr))     {      $disorder = $evalue = $minid+1;     }     else     {      $disorder = $arr['disorder']+1;      $evalue = $arr['evalue']+1;     }     $dsql->ExecuteNoneQuery("Insert into `dede_sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)                                  values('$ename','$evalue','$egroup','$disorder','$issign'); ");        }        WriteEnumsCache($egroup);    ShowMsg("成功添加枚举分类！", $ENV_GOBACK_URL);    exit();  }}

然后保存，在系统后台更新系统缓存就可以了的。现在在后台的联动类别管理里面就可以增加二级选择了。