全站搜索不在搜索非本人的私有资源，且他人的公开资源亦不能修改其公开私有属性2、添加迁移文件

app/controllers/files_controller.rb

@@ -69,7 +69,7 @@ class FilesController < ApplicationController
     # StoresController#search 将每条文件都查出来，再次进行判断过滤。---> resultSet.to_a.map
     # 此时内容不多速度还可，但文件增长，每条判断多则进行3-4次表连接。
     # 现在还木有思路 药丸
-    resultSet = Attachment.where("attachments.container_type IS NOT NULL AND filename LIKE :like ", like: "%#{keywords}%").
+    resultSet = Attachment.where("attachments.container_type IS NOT NULL AND (is_public = 1 OR author_id = #{User.current.id}) AND filename LIKE :like ", like: "%#{keywords}%").
               reorder("created_on DESC")
   end
 

app/views/files/_course_list.html.erb

@@ -21,12 +21,13 @@
     <div class="re_con_box">
       <div class=" ">
         <%= link_to_attachment file, :download => true, :title => file.filename+"\n"+file.description.to_s, :style => "overflow: hidden; white-space: nowrap;text-overflow: ellipsis;",:class => "c_dblue f_14 f_b f_l" %>
-        <% if is_course_teacher(User.current,@course) %>
+        <% if is_course_teacher(User.current,@course) && User.current.id == file.author_id %>
             <%= link_to "选入我的课程",quote_resource_show_course_file_path(@course,file),:class => "f_l re_select",:remote => true %>
             <span id="is_public_<%= file.id %>">
               <%= link_to (file.is_public? ? "公开":"私有"), update_file_dense_attachments_path(:attachmentid=>file.id,:newtype=>(file.is_public? ? 0:1)),:remote=>true,:class=>"f_l re_open",:method => :post  %>
             </span>
         <% else %>
+            <%= link_to "选入我的课程",quote_resource_show_course_file_path(@course,file),:class => "f_l re_select",:remote => true %>
             <%= link_to (file.is_public? ? "公开":"私有"),"javascript:void(0)",:class=>"f_l re_open" %>
         <% end %>
       </div>

db/migrate/20141120091234_add_column_copyfrom_to_attachment.rb

@@ -0,0 +1,5 @@
+class AddColumnCopyfromToAttachment < ActiveRecord::Migration
+  def change
+    add_column("attachments","copy_from",:integer)
+  end
+end