编程作业不可修改作品，界面显示

app/helpers/application_helper.rb

@@ -2307,6 +2307,8 @@ module ApplicationHelper
     else
       if homework.homework_type == 1 && homework.homework_detail_manual && homework.homework_detail_manual.comment_status != 1 #匿评作业，且作业状态不是在开启匿评之前
         "<span class='fr mr10 pr_join_span '>#{l(:label_edit_homework)}</span>".html_safe
+      elsif homework.homework_type == 2 #编程作业不能修改作品
+        "<span class='fr mr10 pr_join_span ' title='编程作业不可修改作品'>作品已交</span>".html_safe
       else
         link_to l(:label_edit_homework),  edit_student_work_path(work.id),:class => 'fr mr10 work_edit'
       end