From 66d76eeed78a3ba6692de18a8de474e129a3038c Mon Sep 17 00:00:00 2001
From: alan <547533434@qq.com>
Date: Wed, 10 Dec 2014 18:40:04 +0800
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Signed-off-by: alan <547533434@qq.com>
---
 app/models/course_group.rb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/models/course_group.rb b/app/models/course_group.rb
index c5c2f5c85..144c43c6e 100644
--- a/app/models/course_group.rb
+++ b/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")