作品名称的缺省值为 作业名称+的作品提交(可修改) 若学生不修改则保存为 作业名称+的作品提交

app/controllers/student_work_controller.rb

@@ -1,3 +1,4 @@
+#encoding: utf-8
 class StudentWorkController < ApplicationController
   layout "base_courses"
   include StudentWorkHelper
@@ -282,7 +283,7 @@ class StudentWorkController < ApplicationController
       @submit_result = true
       student_work = StudentWork.find(params[:student_work_id]) if params[:student_work_id]
       student_work ||= StudentWork.new
-      student_work.name = params[:student_work][:name]
+      student_work.name = params[:student_work][:name] == "#{@homework.name}的作品提交(可修改)" ? "#{@homework.name}的作品提交" : params[:student_work][:name]
       student_work.description = params[:student_work][:description]
       student_work.homework_common_id = @homework.id
       student_work.user_id = User.current.id

app/views/student_work/new.html.erb

@@ -242,7 +242,7 @@
             <%=hidden_field_tag 'group_member_ids', params[:group_member_ids], :value=>User.current.id %>
         <% end %>
         <div>
-          <%= f.text_field "name", :required => true, :size => 60, :class => "InputBox  W700", :maxlength => 200, :placeholder => "请输入作品名称",:value=>"#{@homework.name}的作品提交", :onkeyup => "regexStudentWorkName();" %>
+          <%= f.text_field "name", :required => true, :size => 60, :class => "InputBox  W700", :maxlength => 200, :placeholder => "请输入作品名称",:value=>"#{@homework.name}的作品提交(可修改)", :onkeyup => "regexStudentWorkName();" %>
           <div class="cl"></div>
           <p id="student_work_name_span" class="c_red mb10"></p>
         </div>