gitlab-org--gitlab-foss/db/migrate/20170802013652_add_storage_...

# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.

class AddStorageFieldsToProject < ActiveRecord::Migration[4.2]
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  def up
    add_column :projects, :storage_version, :integer, limit: 2
  end

  def down
    remove_column :projects, :storage_version
  end
end
Add UUID Storage to Project 2017-08-02 02:11:35 +00:00			`# See http://doc.gitlab.com/ce/development/migration_style_guide.html`
			`# for more information on how to write migrations for GitLab.`

Add version 4.2 to all existing migrations DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912 2018-11-13 07:27:31 +00:00			`class AddStorageFieldsToProject < ActiveRecord::Migration[4.2]`
Add UUID Storage to Project 2017-08-02 02:11:35 +00:00			`include Gitlab::Database::MigrationHelpers`

			`DOWNTIME = false`

			`def up`
New storage is now "Hashed" instead of "UUID" 2017-08-04 05:30:42 +00:00			`add_column :projects, :storage_version, :integer, limit: 2`
Add UUID Storage to Project 2017-08-02 02:11:35 +00:00			`end`

			`def down`
			`remove_column :projects, :storage_version`
			`end`
			`end`