问吧右下角贴吧排序按照帖子发布数和回帖数之和排序

app/controllers/forums_controller.rb

@@ -143,7 +143,7 @@ class ForumsController < ApplicationController
         reorder(order).
         preload(:author, {:last_reply => :author}).
         all
-    @forums = Forum.reorder("topic_count desc,updated_at desc")
+    @forums = Forum.find_by_sql("SELECT *,topic_count + memo_count tm FROM `forums` order by tm desc;")
     @my_forums_count = Memo.where("author_id =? and parent_id is null", User.current.id).count
     @my_memos_count =  Memo.where("author_id =? and parent_id is not null", User.current.id).count
     @errors = params[:errors]