This fork supports Rails 5.2 or higher.

Also, this fork does not depend on frontend libraries: jQuery, jQuery UI, Twitter Bootstrap.

Merchant

The PayPal Merchant SDK provides Ruby APIs for processing payments, recurring payments, subscriptions and transactions using PayPal's Merchant APIs, which include Express Checkout, Recurring Payments, Direct Payment and Transactional APIs.

Support

Please contact PayPal Technical Support for any live or account issues.

Installation

Add this line to your application's Gemfile:

gem 'paypal-sdk-merchant'

And then execute:

$ bundle

Or install it yourself as:

$ gem install paypal-sdk-merchant

Configuration

For Rails application:

rails g paypal:sdk:install

For other ruby application, create a configuration file(config/paypal.yml):

development: &default
  username: jb-us-seller_api1.paypal.com
  password: WX4WTU3S8MY44S7F
  signature: AFcWxV21C7fd0v3bYYYRCpSSRl31A7yDhhsPUU2XhtMoZXsWHFxu-RWy
  app_id: APP-80W284485P519543T
  http_timeout: 30
  mode: sandbox
  # # with certificate
  # cert_path: "config/cert_key.pem"
  # # with token authentication
  # token: ESTy2hio5WJQo1iixkH29I53RJxaS0Gvno1A6.YQXZgktxbY4I2Tdg
  # token_secret: ZKPhUYuwJwYsfWdzorozWO2U9pI
  # # with Proxy
  # http_proxy: http://proxy-ipaddress:3129/
test:
  <<: *default
production:
  <<: *default
  mode: live

Load Configurations from specified file:

PayPal::SDK.load('config/paypal.yml',  ENV['RACK_ENV'] || 'development')

Example

require 'paypal-sdk-merchant'
PayPal::SDK.configure(
  mode:      "sandbox",  # Set "live" for production
  app_id:    "APP-80W284485P519543T",
  username:  "jb-us-seller_api1.paypal.com",
  password:  "WX4WTU3S8MY44S7F",
  signature: "AFcWxV21C7fd0v3bYYYRCpSSRl31A7yDhhsPUU2XhtMoZXsWHFxu-RWy"
)

@api = PayPal::SDK::Merchant.new

# Build request object
@do_direct_payment = @api.build_do_direct_payment({
  DoDirectPaymentRequestDetails: {
    PaymentAction: "Sale",
    PaymentDetails: {
      OrderTotal: {
        currencyID: "USD",
        value:      "1"
      },
      NotifyURL: "http://localhost:3000/samples/merchant/ipn_notify"
    },
    CreditCard: {
      CreditCardType:   "Visa",
      CreditCardNumber: "4904202183894535",
      ExpMonth:         12,
      ExpYear:          2022,
      CVV2:             "962"
    }
  }
})

# Make API call & get response
@response = @api.do_direct_payment(@do_direct_payment)

# Access Response
if @response.success?
  @response.TransactionID
else
  @response.Errors
end

Samples

Add following line in rails Gemfile:

gem 'paypal-sdk-merchant'
gem 'merchant_samples', git: "https://github.com/paypal/merchant-sdk-ruby.git", group: :development

Configure routes(config/routes.rb):

mount MerchantSamples::Engine => "/samples" if Rails.env.development?

To get default paypal configuration execute:

rails g paypal:sdk:install