* Finish task#57156

framework/router.class.php

@@ -119,6 +119,8 @@ class router extends baseRouter
                 if(isset($nullKey))$lang->{$moduleName}->{$section}[$nullKey] = $nullValue;
                 foreach($fields as $key => $value)
                 {
+                    if($section == 'priList' and $key > 0 and $value === '') continue; // Fix bug #23538.
+
                     if(!isset($lang->{$moduleName})) $lang->{$moduleName} = new stdclass();
                     if(!isset($lang->{$moduleName}->{$section})) $lang->{$moduleName}->{$section} = array();
                     $lang->{$moduleName}->{$section}[$key] = $value;

module/custom/control.php

@@ -236,6 +236,8 @@ class custom extends control
 
                     $value  = $data->values[$index];
                     $system = $data->systems[$index];
+                    if($key and $value === '') return $this->send(array('result' => 'fail', 'message' => $this->lang->custom->notice->valueEmpty)); // Fix bug #23538.
+
                     $this->custom->setItem("{$lang}.{$module}.{$field}.{$key}.{$system}", $value);
                 }
             }

module/custom/lang/en.php

@@ -183,6 +183,7 @@ $lang->custom->notice->readOnlyOfProduct   = 'If Change Forbidden, any change on
 $lang->custom->notice->readOnlyOfExecution = "If Change Forbidden, any change on tasks, builds, efforts and stories of the closed {$lang->executionCommon} is also forbidden.";
 $lang->custom->notice->readOnlyOfKanban    = "If Change Forbidden, any change on kanban card and related operations of {$lang->custom->kanban} is also forbidden.";
 $lang->custom->notice->URSREmpty           = 'Custom requirement name can not be empty!';
+$lang->custom->notice->valueEmpty          = 'Value can not be empty!';
 $lang->custom->notice->confirmDelete       = 'Are you sure you want to delete it?';
 $lang->custom->notice->confirmReviewCase   = 'Set the case in Wait to Normal?';
 $lang->custom->notice->storyReviewTip      = 'After selecting by individual, position, and department, take the union of these three filters. ';

module/custom/lang/zh-cn.php

@@ -183,6 +183,7 @@ $lang->custom->notice->readOnlyOfProduct   = '禁止修改后，已关闭' . $la
 $lang->custom->notice->readOnlyOfExecution = "禁止修改后，已关闭{$lang->custom->execution}下的任务、版本、日志以及关联需求都禁止修改。";
 $lang->custom->notice->readOnlyOfKanban    = "禁止修改后，已关闭{$lang->custom->kanban}下的卡片以及相关设置都禁止修改。";
 $lang->custom->notice->URSREmpty           = '自定义需求名称不能为空！';
+$lang->custom->notice->valueEmpty          = '值不能为空！';
 $lang->custom->notice->confirmDelete       = '您确定要删除吗？';
 $lang->custom->notice->confirmReviewCase   = '是否将待评审的用例修改为正常状态？';
 $lang->custom->notice->storyReviewTip      = '按人员、职位、部门勾选后，取所有人员的并集。';