实训课程删除权限

app/controllers/subjects_controller.rb

@@ -6,6 +6,7 @@ class SubjectsController < ApplicationController
   before_filter :require_login, :except => [:show, :index]
   before_filter :check_authentication, :except => [:show, :index]
   before_filter :find_subject, :except => [:index, :new, :create, :create_subject, :new_subject, :append_to_stage, :send_to_course]
+  before_filter :require_admin, :only => [:destroy]
 
   include ApplicationHelper
   include SubjectsHelper