首先在空间里找到dede/stepselect_main.php 这个文件，然后找到其中的[color=rgb(51, 51, 51)]这段代码[color=rgb(51, 51, 51)]：
[*]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 = $dsql->GetOne("SELECT * FROM `#@__sys_enum` WHERE egroup='$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);
[*]
[*] $dsql->ExecuteNoneQuery("INSERT INTO `#@__sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)
[*] VALUES('$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 == 3 && $topvalue != 0)
[*] {
[*] $minid = $topvalue;
[*] $maxnum = 500; // 三级子类最多500个
[*] $enames = explode(',', $ename);
[*] foreach ($enames as $ename)
[*] {
[*] $arr = $dsql->GetOne("SELECT * FROM `#@__sys_enum` WHERE egroup='$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;
[*] }
[*] $sql = "INSERT INTO `#@__sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)
[*] VALUES('$ename','$evalue','$egroup','$disorder','$issign'); ";
[*] // echo $sql;exit;
[*] $dsql->ExecuteNoneQuery($sql);
[*] }
[*] // echo $minid;
[*] WriteEnumsCache($egroup);
[*] ShowMsg("成功添加枚举分类！".$issign, $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;
[*] $evalue = (int)($arr['evalue']+1);
[*] }
[*] $dsql->ExecuteNoneQuery("Insert into `dede_sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)
[*] values('$ename','$evalue','$egroup','$disorder','$issign'); ");
[*] }
[*] WriteEnumsCache($egroup);
[*] ShowMsg("成功添加枚举分类！".$issign, $ENV_GOBACK_URL);
[*] exit();
[*]}
[*]}
[*]2.dede/templets/stepselect_main.htm
找到
if($topvalue % 500 != 0) $arr['issign'] =2;
修改为
if($topvalue % 500 != 0) $arr['issign'] =3;
if($topvalue % 500 == 0) $arr['issign'] =2;
以上这样修改后1,2,3联动能添加，再4级就不行了。应为这里的标记只判断到3，织梦也最多能添加3级联动。所以足够用了。
以经改好了代码 大家可以下载 解决dedecms5.7后台不能添加联动二级的bug
解决dedecms5.7后台不能添加联动二级的bug-草根吧 GBK.rar
