1 files changed, 21 insertions, 0 deletions
diff --git a/db/migrate/20160610201627_migrate_users_notification_level.rb b/db/migrate/20160610201627_migrate_users_notification_level.rb
new file mode 100644
index 00000000000..760b766828e
--- /dev/null
+++ b/db/migrate/20160610201627_migrate_users_notification_level.rb
@@ -0,0 +1,21 @@
+class MigrateUsersNotificationLevel < ActiveRecord::Migration
+  # Migrates only users who changed their default notification level :participating
+  # creating a new record on notification settings table
+
+  def up
+    execute(%Q{
+      INSERT INTO notification_settings
+      (user_id, level, created_at, updated_at)
+      (SELECT id, notification_level, created_at, updated_at FROM users WHERE notification_level != 1)
+    })
+  end
+
+  # Migrates from notification settings back to user notification_level
+  # If no value is found the default level of 1 will be used
+  def down
+    execute(%Q{
+      UPDATE users u SET
+      notification_level = COALESCE((SELECT level FROM notification_settings WHERE user_id = u.id AND source_type IS NULL), 1)
+    })
+  end
+end