balanced account adding a card

add_card.rb

  def add_card(card_uri, reuse=false)
    card = self.balanced_cards.where(:uri => card_uri).first
    unless card
      BalancedAccount.transaction do
        begin
          card = BalancedCard.new(:uri => card_uri, :reuse => reuse, :balanced_accout => self)
          self.balanced_cards << card
          card.save!
          save!
          # remote_object is an instance of Balanced::Account
          remote_object.add_card(card_uri)
        rescue Balanced::Error => e
          # NOTE: balanceable.email is safe because we only add cards to User objects
          logger.error "ERROR: unable to add card #{card_uri} for #{balanceable.email}: #{e.message}"
          card = nil
          raise ActiveRecord::Rollback
        rescue Exception => e
          # NOTE: balanceable.email is safe because we only add cards to User objects
          logger.error "ERROR: unable to add card #{card_uri} for #{balanceable.email}: #{e.message}"
          card = nil
          raise ActiveRecord::Rollback
        end # end begin / rescue
      end # end transaction
    end # end unless
    card
  end