作业从资源库引入作者为别人的资源不能删除bug

app/controllers/users_controller.rb

@@ -507,6 +507,7 @@ class UsersController < ApplicationController
         att_copy = atta.copy
         att_copy.container_id = nil
         att_copy.container_type = nil
+        att_copy.author_id = User.current.id
         att_copy.copy_from = atta.id
         att_copy.save
         @attachments << att_copy