统计接口调整

app/controllers/courses_controller.rb

@@ -244,6 +244,7 @@ class CoursesController < ApplicationController
       @rank = user_ids.index(current_user.id).to_i + 1
       @course_members = @course_members.select{|member| member.user_id == current_user.id}
     else
+      @all_count = @course_members.size
       @course_members = paginate @course_members
     end
   end

app/views/courses/work_score.json.jbuilder

@@ -10,4 +10,5 @@ json.course_members @course_members.each do |member|
   json.graduation_score member.graduation_score
   json.total_score member.score
   json.rank @rank if @user_course_identity == Course::STUDENT
-end
+end
+json.all_count @all_count