* Finish task #7429.

module/task/lang/en.php

@@ -211,6 +211,7 @@ $lang->task->error->consumed         = 'Task: %s hour must be < 0. Ignore change
 $lang->task->error->assignedTo       = 'Multi-user task in the current status cannot be assigned to a member who is not in the task team.';
 $lang->task->error->consumedEmpty    = '"Current Cost" should not be empty.';
 $lang->task->error->deadlineSmall    = '"Deadline" must be greater than "StartDate".';
+$lang->task->error->alreadyStarted   = 'You cannot start this task, because it is started.';
 
 /* Report. */
 $lang->task->report = new stdclass();

module/task/lang/zh-cn.php

@@ -211,6 +211,7 @@ $lang->task->error->consumed         = '任务：%s工时不能小于0，忽略
 $lang->task->error->assignedTo       = '当前状态的多人任务不能指派给任务团队外的成员。';
 $lang->task->error->consumedEmpty    = '"本次消耗"不能为空';
 $lang->task->error->deadlineSmall    = '"截止日期"必须大于"预计开始"';
+$lang->task->error->alreadyStarted   = '此任务已被启动，不能重复启动！';
 
 /* Report. */
 $lang->task->report         = new stdclass();

module/task/model.php

@@ -1208,6 +1208,7 @@ class taskModel extends model
     public function start($taskID)
     {
         $oldTask = $this->getById($taskID);
+        if($oldTask->status == 'doing') dao::$errors[] = $this->lang->task->error->alreadyStarted;
         if(!empty($oldTask->team))
         {
             if($this->post->consumed < $oldTask->team[$this->app->user->account]->consumed) dao::$errors['consumed'] = $this->lang->task->error->consumedSmall;