gistfile1.txt

  def accept_offer
    self.update_attributes! {
      :offer_accepted_at => Time.now,
      :offer_declined_at => nil
    }
    self
  end

  def decline_offer
    self.update_attributes {
      :offer_declined_at => Time.now,
      :offer_accepted_at => nil
    }
    self
  end