A simple ruby wrapper for paypal.

Currently paypal supports the following:

• Verifying Paypal IPN's
• MassPay Requests
• Permissions Service
• Authentication Service

Paypal.setup do |config|
  config.environment = "sandbox" # replace with "live" in production
  config.api_username = "Replace me with your api username"
  config.api_password = "Replace me with your api password"
  config.api_signature = "Replace me with your api signature"
end

class PaypalIpn
  include Paypal::Ipn
  attr_accessor :params
end

Note: Your class must respond to params and return a hash of paypal ipn parameters

• payment_completed?
• payment_status
• txn_id

• verify Verifies the IPN with paypal and returns true or false
• receiver_email
• self.txn_type(params)
• self.masspay_transaction?(params)

class BuyerPaypalIpn
  include Paypal::Ipn::Buyer
  attr_accessor :params
end

• customer_address Convienence method. e.g. John Smith, 5 Some Street, Some City, Some State, Australia 1234
• customer_address_name
• customer_address_street
• customer_address_city
• customer_address_state
• customer_address_zip
• customer_address_country

class ItemPaypalIpn
  include Paypal::Ipn::Item
  attr_accessor :params
end

• item_name(index = nil) If index is supplied it will return item_name#index otherwise simply item_name
• item_number(index = nil)
• item_quantity(index = nil)
• number_of_cart_items

class MasspayPaypalIpn
  include Paypal::Ipn::Masspay
  attr_accessor :params
end

Note: Currently Masspay IPN's only support a single transaction

• payment_status Returns the payment status for the 1st transaction
• txn_id Returns the transaction id for the 1st transaction
• payment_unclaimed? Returns whether the payment status for the 1st transaction was unclaimed or not

• unique_id Returns the unique_id for the 1st transaction

class Masspay
  include Paypal::Masspay
  attr_accessor :payment_response
end

Note: Your class must respond to payment_response and return the payment response as a hash

• successful_payment? Returns whether the masspay request was successful or not. Note: This only tells you if the request was successful or not. You should wait for an IPN to verify the receiver has been paid.

• masspay(payer_email, receiver_email, amount, currency, note, unique_id) Sends a mass pay request from payer_email to receiver_email for amount in currency. The note will appear on the receivers paypal account and the unique_id will be passed back in the Paypal IPN. Returns the response from paypal.

• payment_error_type Returns :unauthorized or :insufficient_funds for these types of errors otherwise returns :unknown

• payment_error_message Returns the paypal long error message

Note: Currently Masspay payments only support a single recipient

class Permissions
  include Paypal::Permissions
end

1. Make a call to set_paypal_permissions_url setting the return_url to your application's callback url and with your required_permissions

2. Redirect the user to that url

3. When Paypal redirects the user back to your application at return_url make a call to get_paypal_permissions with the token parameter

See below for further details:

set_paypal_permissions_url(return_url, required_permissions = {}) Returns a url where the user can sign in to Paypal and authorize the requested permissions. Paypal will then redirect the user to the return_url. Specify required_permissions by supplying a hash in the following format: { :mass_pay => true, :refund_transaction => true, :get_transaction_details => true } First name, Last name and email are always required permissions so you never have to specify these manually.

get_paypal_permissions(token) Returns a hash of user information and permission details for the given token in the following format: { :email => "[email protected]", :first_name => "Joe", :last_name => "Bloggs", :payer_id => "VK7XZU4BDY79", :permissions => { :mass_pay => true, :refund_transaction => true, :get_transaction_details => true } }

gem install paypal-ipn

Place the following in your Gemfile: gem 'paypal-ipn', :require => 'paypal'

To generate a stub initializer under config/initializers run: rails g paypal:initializer

Copyright (c) 2010 David Wilkie, released under the MIT license