From fdca4ea968567048e8a051bd98220d85f3db4d70 Mon Sep 17 00:00:00 2001
From: daiao <358551898@qq.com>
Date: Wed, 28 Sep 2016 16:52:02 +0800
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---
 app/controllers/users_controller.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 87dc127a0..c13039696 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -3200,6 +3200,7 @@ class UsersController < ApplicationController
         ori = Attachment.find_by_id(send_id)
         # 如果该附件已经存课程中，则只更新附件创建时间
         mul_container.attachments.each do |att|
+          @exist = false
           if att.id == ori.id || (!att.copy_from.nil? && !ori.copy_from.nil? && att.copy_from == ori.copy_from) || att.copy_from == ori.id || att.id == ori.copy_from
             att.created_on = Time.now
             att.save