Bug：新建作业时菜单栏第一个显示蓝色，应该是第二个显示蓝色

app/controllers/projects_controller.rb

@@ -28,7 +28,7 @@ class ProjectsController < ApplicationController
   
   # menu_item l(:label_homework), :only => :homework
   # menu_item l(:label_course_feedback), :only => :feedback
-  menu_item :homework, :only => :homework
+  menu_item :homework, :only => [:homework, :new_homework]
   menu_item :feedback, :only => :feedback
   menu_item l(:label_course_file), :only => :index
   menu_item l(:label_course_news), :only => :index

app/helpers/application_helper.rb

@@ -36,13 +36,11 @@ module ApplicationHelper
   
   #Added by young
   #Define the course menu's link class
+  # 不是数组的转化成数组，然后判断当前menu_item是否在给定的列表
+  # REVIEW: 目测menu的机制，貌似不是很需要转换，再说
   def link_class(label)
-     if current_menu_item == label
-        @class = 'selected'
-     else
-        @class = ''
-     end
-     return @class
+    labels = label.is_a?(Array) ? label : ([] << label)
+    labels.include?(current_menu_item) ? 'selected' : ''
   end
   #Ended by young
   # Return true if user is authorized for controller/action, otherwise false