超级管理员可查看下载私有课程的私有资源

app/controllers/files_controller.rb

@@ -37,7 +37,7 @@ class FilesController < ApplicationController
     obj.each do |container|
       @attachments += container.attachments
     end
-    @all_attachments = visable_attachemnts(@attachments)
+    @all_attachments = User.current.admin? ? @attachments : visable_attachemnts(@attachments)
     @limit = 10
     @feedback_count = @all_attachments.count
     @feedback_pages = Paginator.new @feedback_count, @limit, params['page']

app/views/files/_course_list.html.erb

@@ -22,7 +22,7 @@
 
 <div class="for_img_thumbnails">
   <% curse_attachments.each do |file| %>
-      <% if file.is_public? || User.current.member_of_course?(course) %>
+      <% if file.is_public? || User.current.member_of_course?(course) || User.current.admin? %>
           <div class="re_con_box" id="container_files_<%= file.id %>">
             <div class="">
               <%= link_to truncate(file.filename,length: 35, omission: '...'),