gitlab-org--gitlab-foss/db/migrate/20170426175636_fill_missing...

class FillMissingUuidOnApplicationSettings < ActiveRecord::Migration[4.2]
  DOWNTIME = false

  def up
    execute("UPDATE application_settings SET uuid = #{quote(SecureRandom.uuid)} WHERE uuid is NULL")
  end

  def down
  end
end
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 FillMissingUuidOnApplicationSettings < ActiveRecord::Migration[4.2]`
Fill missing uuid on the application_settings table 2017-04-26 18:01:23 +00:00			`DOWNTIME = false`

			`def up`
			`execute("UPDATE application_settings SET uuid = #{quote(SecureRandom.uuid)} WHERE uuid is NULL")`
			`end`

			`def down`
			`end`
			`end`