PaypalExpressHelper#get_order_info

PaypalExpressHelper.rb

module PaypalExpressHelper
  def get_setup_purchase_params(cart, request)
     # implemented in the previous blog post
  end

  def get_order_info(gateway_response, cart)
    subtotal, shipping, total = get_totals(cart)
    {
      shipping_address: gateway_response.address,
      email: gateway_response.email,
      name: gateway_response.name,
      gateway_details: {
        :token => gateway_response.token,
        :payer_id => gateway_response.payer_id,
      },
      subtotal: subtotal,
      shipping: shipping,
      total: total,
    }
  end

  def get_shipping(cart)
    # define your own shipping calculation rules here
  end

  def get_items(cart)
    # implemented in the previous blog post
  end

  def get_totals(cart)
    # implemented in the previous blog post
  end

  def to_cents(money)
    # implemented in the previous blog post
  end
end