增加作业按评分排序

app/controllers/bids_controller.rb

@@ -407,7 +407,10 @@ class BidsController < ApplicationController
 
     if @bid.homework_type == 1
       @homework = HomeworkAttach.new
-      @homework_list = @bid.homeworks
+      #@homework_list = @bid.homeworks
+      @homework_list = HomeworkAttach.find_by_sql("SELECT homework_attaches.*,
+        (SELECT AVG(stars) FROM seems_rateable_rates WHERE rateable_type = 'HomeworkAttach' AND rateable_id = homework_attaches.id) AS score
+        FROM homework_attaches WHERE bid_id = #{@bid.id} ORDER BY score DESC")
       if params[:student_id].present?
         @temp = []
         @homework_list.each do |pro|