增加《不区分大小写分班班名唯一》功能

Signed-off-by: alan <547533434@qq.com>

app/models/course_group.rb

@@ -12,7 +12,8 @@ class CourseGroup < ActiveRecord::Base
   before_destroy :set_member_nil
 
   attr_accessible :name
-  validates :name, :presence => true, :length => {:maximum => 20}, :uniqueness => true
+  validates :name, :presence => true, :length => {:maximum => 20},
+            :uniqueness => {case_sensitive: false}
   def set_member_nil
     if self.members && self.members.count > 0
        self.members.update_all("course_group_id = 0")