From 9674838baf50d5caa31a4af7069996564703d8cb Mon Sep 17 00:00:00 2001
From: cxt <853663049@qq.com>
Date: Thu, 29 Aug 2019 16:50:15 +0800
Subject: [PATCH] =?UTF-8?q?=E8=AF=BE=E5=A0=82=E5=88=86=E7=8F=AD=E7=9A=84?=
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---
 .../20190829084147_migrate_course_group_position.rb   | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 db/migrate/20190829084147_migrate_course_group_position.rb

diff --git a/db/migrate/20190829084147_migrate_course_group_position.rb b/db/migrate/20190829084147_migrate_course_group_position.rb
new file mode 100644
index 000000000..3a71baae4
--- /dev/null
+++ b/db/migrate/20190829084147_migrate_course_group_position.rb
@@ -0,0 +1,11 @@
+class MigrateCourseGroupPosition < ActiveRecord::Migration[5.2]
+  def change
+    Course.all.each do |course|
+      if course.course_groups.exists?(position: 0)
+        course.course_groups.each_with_index do |group, index|
+          group.update_attributes(position: index+1)
+        end
+      end
+    end
+  end
+end