gistfile1.rb

class ScheduledChemicalsOrderNotification
  include ::DataMapper::Resource

  #
  # Properties
  #

  property :scheduled_at, DateTime
  property :executed_at, DateTime
  property :chemicals_order_id, Integer
  
  #
  # Validations
  #
  

  #
  # Association
  #

  has 1, :chemicals_order

  #
  # API
  #

  def executed?
    ! self.executed_at.nil?
  end

  def mark_as_executed!
    self.executed_at = DateTime.now
    save
  end
end