1、最终成绩提示框保留2位数字

2、修改迟交扣分时，迟交作品计算有问题

app/controllers/homework_common_controller.rb

@@ -92,7 +92,7 @@ class HomeworkCommonController < ApplicationController
     @homework.publish_time = params[:homework_common][:publish_time]
     @homework.homework_type = params[:homework_common][:homework_type]
     unless @homework.late_penalty == params[:late_penalty]
-      @homework.student_works.where("created_at > #{@homework.end_time}").each do |student_work|
+      @homework.student_works.where("created_at > '#{@homework.end_time} 23:59:59'").each do |student_work|
         student_work.late_penalty = params[:late_penalty]
         student_work.save
       end

app/views/student_work/_student_work.html.erb

@@ -52,7 +52,7 @@
               缺评扣分
               <span class="c_red">&nbsp;<%= student_work.absence_penalty%>&nbsp;</span>分，
               最终成绩为
-              <span class="c_red">&nbsp;<%= score%>&nbsp;</span>分。
+              <span class="c_red">&nbsp;<%= format("%.1f",score)%>&nbsp;</span>分。
             </div>
         <% else%>
             <!-- 非匿评作品不显示缺评扣分 -->
@@ -62,7 +62,7 @@
               迟交扣分
               <span class="c_red">&nbsp;<%= student_work.late_penalty%>&nbsp;</span>分，
               最终成绩为
-              <span class="c_red">&nbsp;<%= score%>&nbsp;</span>分。
+              <span class="c_red">&nbsp;<%= format("%.1f",score)%>&nbsp;</span>分。
             </div>
         <% end%>
     <% end%>