1.作业增加按时间、评分的升序、降序排列

2.修改升序、降序排序判断参数不正确的问题

app/controllers/homework_attach_controller.rb

@@ -12,13 +12,13 @@ class HomeworkAttachController < ApplicationController
   #获取未批作业列表
   def get_not_batch_homework
     sort, direction = params[:sort], params[:direction]
-    order_by = sort == 'score'? "s_score #{direction}" : "created_at #{direction}"
-    
+    order_by = sort == 'socre'? "s_score #{direction}" : "created_at #{direction}"
     teachers = find_course_teachers @course
     all_homework_list = HomeworkAttach.eager_load(:attachments,:user,:rate_averages).find_by_sql("SELECT * FROM (SELECT homework_attaches.*,
         (SELECT AVG(stars) FROM seems_rateable_rates WHERE rateable_type = 'HomeworkAttach' AND rateable_id = homework_attaches.id AND rater_id IN #{teachers}) AS t_score,
         (SELECT AVG(stars) FROM seems_rateable_rates WHERE rateable_type = 'HomeworkAttach' AND rateable_id = homework_attaches.id AND rater_id NOT IN #{teachers}) AS s_score
-        FROM homework_attaches WHERE bid_id = #{@bid.id} ORDER BY #{order_by}) AS table1
+        FROM homework_attaches WHERE bid_id = #{@bid.id}
+        ORDER BY #{order_by}) AS table1
         WHERE table1.t_score IS NULL")
 
     @homework_list = paginateHelper all_homework_list,10
@@ -31,13 +31,14 @@ class HomeworkAttachController < ApplicationController
   #获取已评作业列表
   def get_batch_homeworks
     sort, direction = params[:sort], params[:direction]
-    teachers = find_course_teachers @course
     teacher_proportion = get_teacher_proportion @bid
+    order_by = sort == 'socre'? "(CASE WHEN t_score IS NULL THEN 0 ELSE t_score * #{teacher_proportion} END + CASE WHEN s_score IS NULL THEN 0 ELSE s_score * #{1 - teacher_proportion} END) #{direction}" : "created_at #{direction}"
+    teachers = find_course_teachers @course
     all_homework_list = HomeworkAttach.eager_load(:attachments,:user,:rate_averages).find_by_sql("SELECT * FROM (SELECT homework_attaches.*,
             (SELECT AVG(stars) FROM seems_rateable_rates WHERE rateable_type = 'HomeworkAttach' AND rateable_id = homework_attaches.id AND rater_id IN #{teachers} and stars IS NOT NULL) AS t_score,
             (SELECT AVG(stars) FROM seems_rateable_rates WHERE rateable_type = 'HomeworkAttach' AND rateable_id = homework_attaches.id AND rater_id NOT IN #{teachers}) AS s_score
             FROM homework_attaches WHERE bid_id = #{@bid.id}
-            ORDER BY (CASE WHEN t_score IS NULL THEN 0 ELSE t_score * #{teacher_proportion} END + CASE WHEN s_score IS NULL THEN 0 ELSE s_score * #{1 - teacher_proportion} END) DESC,created_at ASC) AS table1
+            ORDER BY #{order_by}) AS table1
             WHERE table1.t_score IS NOT NULL")
     @homework_list = paginateHelper all_homework_list,10
     @direction = direction == 'asc'? 'desc' : 'asc'
@@ -49,13 +50,14 @@ class HomeworkAttachController < ApplicationController
   #获取所有作业列表
   def get_homeworks
     sort, direction = params[:sort], params[:direction]
-    teachers = find_course_teachers @course
     teacher_proportion = get_teacher_proportion @bid
+    order_by = sort == 'socre'? "(CASE WHEN t_score IS NULL THEN 0 ELSE t_score * #{teacher_proportion} END + CASE WHEN s_score IS NULL THEN 0 ELSE s_score * #{1 - teacher_proportion} END) #{direction}" : "created_at #{direction}"
+    teachers = find_course_teachers @course
     all_homework_list = HomeworkAttach.eager_load(:attachments,:user,:rate_averages).find_by_sql("SELECT homework_attaches.*,
             (SELECT AVG(stars) FROM seems_rateable_rates WHERE rateable_type = 'HomeworkAttach' AND rateable_id = homework_attaches.id AND rater_id in #{teachers}) AS t_score,
             (SELECT AVG(stars) FROM seems_rateable_rates WHERE rateable_type = 'HomeworkAttach' AND rateable_id = homework_attaches.id AND rater_id not in #{teachers}) AS s_score
             FROM homework_attaches WHERE bid_id = #{@bid.id}
-            ORDER BY (CASE WHEN t_score IS NULL THEN 0 ELSE t_score * #{teacher_proportion} END + CASE WHEN s_score IS NULL THEN 0 ELSE s_score * #{1 - teacher_proportion} END) DESC,created_at ASC")
+            ORDER BY #{order_by}")
     @homework_list = paginateHelper all_homework_list,10
     @direction = direction == 'asc'? 'desc' : 'asc'
     respond_to do |format|