全站搜索的结果中不重复显示引用的资源

app/controllers/files_controller.rb

@@ -93,7 +93,7 @@ class FilesController < ApplicationController
     if sort == ""
       sort =  "created_on DESC"
     end
-    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 attachments.copy_from IS NULL AND filename LIKE :like ", like: "%#{keywords}%").
               reorder(sort)
   end