task不重复执行

app/controllers/projects_controller.rb

@@ -933,6 +933,8 @@ class ProjectsController < ApplicationController
     message = params[:msg].to_i
     begin
       @training_task = TrainingTask.find(task_id)
+      # 如果已经执行成功过，则不重复执行
+      return if @training_task.status == 1
       original_project_id = Project.find(@training_task.project_id).try(:forked_from_project_id)
       original_project = Project.find(original_project_id)
     rescue
@@ -941,10 +943,10 @@ class ProjectsController < ApplicationController
     original_tasks_count = original_project.training_tasks.count
     position = @training_task.try(:position) + 1
     # 测试，默认成功
-    if status == 0       
+    if status == 0
       ActiveRecord::Base.transaction do
         if position <= original_tasks_count
-          # 继续下一个任务
+          # 继续发布下一个任务
           publish_training_tasks original_project_id, @training_task.project_id, position
           @training_task.update_attribute(:status, 1)
         end