课程名称有效性判断

app/models/course.rb

@@ -33,8 +33,9 @@ class Course < ActiveRecord::Base
   acts_as_attachable :view_permission => :view_files,
                      :delete_permission => :manage_files
 
-  validates_presence_of :password, :term
+  validates_presence_of :password, :term,:name
   validates_format_of  :class_period, :with =>/^[1-9]\d*$/
+  validates_format_of  :name,:with =>/^[a-zA-Z0-9_\u4e00-\u9fa5]+$/
 
   after_save :create_board_sync
   before_destroy :delete_all_members