点击发布作业的取消按钮时收起输入框

app/views/users/user_homeworks.html.erb

@@ -5,6 +5,7 @@
       $("#course_id").val($("#option_select").val());
       $("#homework_attachments").html("<%= escape_javascript(render :partial => 'users/user_homework_attachment', :locals => { :container => HomeworkCommon.new })%>");
       homework_description_editor.html("");
+      $("#homework_editor").toggle();
   }
 
   function checkAllBox(doc){