Parallel Payment in PayPal Express Gem

gistfile1.rb

require File.join(File.dirname(__FILE__), 'paypal_debugger')

Paypal.sandbox!
mode = :setup

paypal = Payment::Paypal.new

request1 = Paypal::Payment::Request.new(
  :amount => 10,
  :description => 'Instant Payment Request',
  :notify_url => 'http://merchant.example.com/notify',
  :items => [{
    :name => 'Item1',
    :description => 'Item1 Desc',
    :amount => 10,
    :category => :Digital
  }]
)
request2 = request1.dup
request1.seller_id = "[email protected]"
request1.request_id = "To Cerego"
request2.seller_id = "[email protected]"
request2.request_id = "To Nov"

payment_requests = [
  request1,
  request2
]

token = 'EC-7CM94787EV257815N'
payer_id = 'CMJLWADKVFQYJ'
transaction_id = '52B66941CM521935F'

begin
  response = case mode
  when :setup
    response = paypal.client.setup(
      payment_requests,
      RETURN_URL,
      CANCEL_URL,
      :pay_on_paypal => true,
      :no_shipping => true
    )
    puts response.redirect_uri
    puts response.popup_uri
    `open "#{response.redirect_uri}"`
  when :details
    p paypal.client.details(token)
  when :checkout
    p paypal.client.checkout!(
      token,
      payer_id,
      payment_requests
    )
  when :refund
    p paypal.client.refund!(
      transaction_id,
      :type => :Partial,
      :amount => 3
    )
  end
rescue => e
  p e.message
end