1 files changed, 16 insertions, 0 deletions
diff --git a/lib/gitlab/database.rb b/lib/gitlab/database.rb
index 8eacad078c8..42f9605f5ac 100644
--- a/lib/gitlab/database.rb
+++ b/lib/gitlab/database.rb
@@ -249,5 +249,21 @@ module Gitlab
     end
 
     private_class_method :database_version
+
+    def self.add_post_migrate_path_to_rails(force: false)
+      return if ENV['SKIP_POST_DEPLOYMENT_MIGRATIONS'] && !force
+
+      Rails.application.config.paths['db'].each do |db_path|
+        path = Rails.root.join(db_path, 'post_migrate').to_s
+
+        unless Rails.application.config.paths['db/migrate'].include? path
+          Rails.application.config.paths['db/migrate'] << path
+
+          # Rails memoizes migrations at certain points where it won't read the above
+          # path just yet. As such we must also update the following list of paths.
+          ActiveRecord::Migrator.migrations_paths << path
+        end
+      end
+    end
   end
 end