diff --git a/app/helpers/welcome_helper.rb b/app/helpers/welcome_helper.rb
index 068ae2b67..126366ff2 100644
--- a/app/helpers/welcome_helper.rb
+++ b/app/helpers/welcome_helper.rb
@@ -70,29 +70,29 @@ module WelcomeHelper
 	end
 	
 	def sort_project_by_hot
-		return sort_project_by_hot_rails 0
+		sort_project_by_hot_rails 0, 'grade DESC'
 	end
 
 	def sort_course_by_hot 
-		return sort_project_by_hot_rails 1
+		sort_project_by_hot_rails 1, 'course_ac_para DESC'
 	end
 
 	def sort_bid_by_hot
-		return sort_bid_by_hot_rails 1
+		sort_bid_by_hot_rails 1
 	end
 
 	def sort_contest_by_hot
-		return sort_bid_by_hot_rails 2
+		sort_bid_by_hot_rails 2
 	end
 	#取得所有活动
 	def find_all_activities limit=10
-		users = []
-		activities = Activity.find_by_sql("select distinct user_id from activities order by id DESC limit #{limit}" )
-		activities.each { |activity|
-			users << activity.user_id
-		}
-		user_objs = User.find_by_sql("SELECT * FROM users WHERE (users.id IN #{"(" << users.join(',') << ")"} )")
-		activity = Redmine::Activity::Fetcher.new(user_objs)
+		# users = []
+		# activities = Activity.find_by_sql("select distinct user_id from activities order by id DESC limit #{limit}" )
+		# activities.each { |activity|
+		# 	users << activity.user_id
+		# }
+		# user_objs = User.find_by_sql("SELECT * FROM users WHERE (users.id IN #{"(" << users.join(',') << ")"} )")
+		activity = Redmine::Activity::Fetcher.new(nil)
 
 		activity.events_welcome(nil, nil, {:limit => limit})
 	end
@@ -102,23 +102,16 @@ module WelcomeHelper
 		  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("
+	def sort_project_by_hot_rails project_type=0, order_by='grade DESC', limit=10
+		Project.find_by_sql("
 			SELECT p.id, p.name, p.description, p.identifier, t.project_id 
 			FROM projects AS p RIGHT OUTER JOIN (
 				SELECT project_id,grade FROM project_statuses 
-				WHERE project_type = #{project_type} ORDER BY  grade DESC LIMIT #{limit} ) AS t ON p.id = t.project_id ")
-		: Project.find_by_sql("
-			SELECT p.id, p.name, p.description, p.identifier, t.project_id 
-			FROM projects AS p RIGHT OUTER JOIN (
-				SELECT project_id,grade FROM project_statuses 
-				WHERE project_type = #{project_type} ORDER BY  course_ac_para DESC LIMIT #{limit} ) AS t ON p.id = t.project_id ")
+				WHERE project_type = #{project_type} ORDER BY #{order_by} LIMIT #{limit} ) AS t ON p.id = t.project_id ")
 	end
 
-	def sort_bid_by_hot_rails reward_type
-		limit = 10
-		Bid.visible.where('reward_type = ?', reward_type).reorder('bids.commit desc').limit(limit).all
+	def sort_bid_by_hot_rails reward_type, limit = 10
+		Bid.visible.where('reward_type = ?', reward_type).reorder('bids.commit desc').limit(limit)
 	end
 
 end