新建作业，取消之后编程设置按钮消失

app/views/users/user_homeworks.html.erb

@@ -3,7 +3,7 @@
       $("#homework_name").val("");
       $("#homework_end_time").val("");
       $("#course_id").val($("#option_select").val());
-      $("#homework_attachments").html("<%= escape_javascript(render :partial => 'users/user_homework_attachment', :locals => { :container => HomeworkCommon.new })%>");
+      $("#homework_attachments").html("<%= escape_javascript(render :partial => 'users/user_homework_attachment', :locals => { :container => HomeworkCommon.new,:has_program => true })%>");
       homework_description_editor.html("");
       $("#homework_editor").toggle();
   }