class KalibroConfigurationAttributes < ActiveRecord::Base belongs_to :user validates :kalibro_configuration_id, presence: true validates :user, presence: true def kalibro_configuration @kalibro_configuration ||= KalibroConfiguration.find(kalibro_configuration_id) end def kalibro_configuration=(cfg) @kalibro_configuration = cfg self.kalibro_configuration_id = cfg.id end end