讨论区回复最多的主题帖

app/helpers/welcome_helper.rb

@@ -98,9 +98,10 @@ module WelcomeHelper
 	end
 
 	#取得论坛数据
-	def find_hot_forum_topics
-
+	def find_hot_forum_topics limit=10
+		Memo.order('replies_count DESC').where('replies_count <> 0').limit(limit)
 	end
+
 	def sort_project_by_hot_rails project_type
 		limit = 10
 		project_type == 0 ? Project.find_by_sql("