From cce0dba89aff8f0d06cac6d07ade9f1a2d2b8f21 Mon Sep 17 00:00:00 2001
From: cxt <853663049@qq.com>
Date: Fri, 30 Aug 2019 18:53:18 +0800
Subject: [PATCH] tiaoz

---
 app/models/course_group.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/models/course_group.rb b/app/models/course_group.rb
index c5b66d87..d158e68f 100644
--- a/app/models/course_group.rb
+++ b/app/models/course_group.rb
@@ -1,6 +1,6 @@
 class CourseGroup < ActiveRecord::Base
   # attr_accessible :title, :body
-  belongs_to :course
+  belongs_to :course, counter_cache: true
   has_many :course_members
   has_many :members
   has_many :memberships, :class_name => 'Member'