gitlab-org--gitlab-foss/db/migrate/20160830232601_change_lock_version_not_null.rb

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

  DOWNTIME = false

  def up
    change_column_null :issues, :lock_version, true
    change_column_null :merge_requests, :lock_version, true
  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 02:27:31 -05:00			`class ChangeLockVersionNotNull < ActiveRecord::Migration[4.2]`
Remove not-null constraint on lock_version column if it exists Closes #21678 2016-08-30 19:29:11 -04:00			`include Gitlab::Database::MigrationHelpers`

			`DOWNTIME = false`

			`def up`
			`change_column_null :issues, :lock_version, true`
			`change_column_null :merge_requests, :lock_version, true`
			`end`

			`def down`
			`end`
			`end`