Class: Paypal

Inherits:
Object
  • Object
show all
Includes:
CreditCardChecks
Defined in:
lib/ruby-paypal/paypal.rb

Overview

Author:: Chang Sau Sheong ([email protected]) Author:: Philippe F. Monnet ([email protected])

Copyright

Copyright © 2007-2009 Chang Sau Sheong & Philippe F. Monnet

License

Distributes under the same terms as Ruby

Version

0.0.5

:main: Paypal

Installing Ruby-PayPal

A lightweight ruby wrapper for PayPal NVP (Name-Value Pair) APIs. To install type the following at the command line:

$ gem install ruby-paypal

Using Ruby-PayPal

It’s critical that you understand how PayPal works and how the PayPal NVP API works. You should be relatively well-versed in the NVP API Developer Guide and Reference - see:

You should also visit and register yourself with the PayPal Developer Network and get a Sandbox account with in the PayPal Development Central (developer.paypal.com/).

Note that this library only supports the API signature method of securing the API credentials.

By setting Paypal.debug=true, the API will “pretty-print” the PayPal parameters to the console.

Direct Payment

To use credit card payment through PayPal, you need to use the DoDirectPayment APIs:

username = <PayPal API username> password = <PayPal API password> signature = <PayPal API signature> ipaddress = ‘192.168.1.1’ # can be any IP address amount = ‘100.00’ # amount paid card_type = ‘VISA’ # can be Visa, Mastercard, Amex etc card_no = ‘4512345678901234’ # credit card number exp_date = ‘022010’ # expiry date of the credit card first_name = ‘Sau Sheong’ last_name = ‘Chang’ 

paypal = Paypal.new(username, password, signature) # uses the PayPal sandbox
response = paypal.do_direct_payment_sale(ipaddress, amount, card_type,

card_no, exp_date, first_name, last_name) if response.ack == ‘Success’ then # do your thing end The above code is for a final sale only.

Note that the credit card number is checked against a modulo-10 algorithm (Luhn check) as well as a simple credit card type check. For more information please refer to en.wikipedia.org/wiki/Luhn_algorithm and en.wikipedia.org/wiki/Credit_card_number

Express Checkout

To use the customer’s PayPal account for payment, you will need to use the ExpressCheckout APIs:

<to be documented>

PayPal Subscriptions

PayPal Subscriptions is a service offering allowing you to sell subscriptions, consisting of an initial payment followed by several recurring payments. For a good technical overview, review the following guide:

Using the subscriptions service involve understanding the series of exchanges to perform using the NVP API. There are 3 key phases of a subscription:

  1. Creating a subscription request (and button for the customer)

  2. Customer review and confirmation on the PayPal site

  3. Processing of a subscription agreement

Each phase involves specific APIs.

Phase 1 - Subscription Request

In this phase, the do_set_express_checkout method will be called. PayPal will return a token we can use in subsequent API calls.

Let’s create a subcription request with the details of our subscription:

subscription_request = create_monthly_subscription_request( name=‘_Why’s Ruby Camping Adventures’, id=‘MNWRCA’, description=‘_Why’s Ruby Camping Adventures - Monthly Tips And Tricks For Camping Development’, invoice_number=‘INV20091122’, amount=‘5.00’)

Let’s call do_set_express_checkout to get a token back: response = paypal.do_set_express_checkout( return_url=‘www.yoursite.com/subscription-confirmed’, cancel_url=‘www.yoursite.com/subscription-aborted’, amount=‘5.00’, other_params=subscription_request) token = (response.ack == ‘Success’) ? response : ”

Let’s use the token to create a PayPal button to request payment via the sandbox:

form( { :method => ‘post’ , :action => ‘www.sandbox.paypal.com/cgi-bin/webscr’ #sandbox } ) do

input :id => ‘cmd’, :name => ‘cmd’, :type => ‘hidden’, :value => “_express-checkout”;

input :id => ‘token’, :name => ‘token’, :type => ‘hidden’, :value => “#token”;

input :id => ‘submit_subscription_request’, :name => ‘submit’, :type => ‘submit’, :value => ‘Subscribe Via PayPal’ end #form

Phase 2 - Customer Review and Confirmation

The customer will see the details of the subscription agreement we created previously. Upon confirmation, PayPal will redirect the customer to the return_url we specified passing the token back as well as the payerid.

Phase 3 = Subscription Processing

First we will retrieve the details of the check-out:

response = paypal.do_get_express_checkout_details(token)

Then we will execute the actual payment: response = paypal.do_express_checkout_payment(token=token, payment_action=‘Sale’, payer_id=payerid, amount=‘5.00’)

transaction_id = response

Now we can create the actual PayPal subscription

response = @paypal.do_create_recurring_payments_profile(token, start_date=‘2009-11-22 14:30:10’, profile_reference=‘INV20091122’, description=‘_Why’s Ruby Camping Adventures - Monthly Tips And Tricks For Camping Development’, billing_period=‘Month’, billing_frequency=1, total_billing_cycles=11, amount=‘5.00’, currency=‘USD’)

profile_id = @response

The profile_id can then be used in the future to access the details of the subscription, suspend it, reactivate it or cancel it using the following methods:

  • do_get_recurring_payments_profile_details

response = paypal.do_get_recurring_payments_profile_details(profile_id)

  • do_manage_recurring_payments_profile_status

# Suspend response = paypal.do_manage_recurring_payments_profile_status(profile_id, action=‘Suspend’, note=‘The subscription is being suspended due to payment cancellation by the customer’)

# Re-Activate response = paypal.do_manage_recurring_payments_profile_status(profile_id, action=‘Reactivate’, note=‘The subscription is being reactivated due to new payment by the customer’)

# Cancel response = paypal.do_manage_recurring_payments_profile_status(profile_id, action=‘Cancel’, note=‘The subscription is being cancelled due to cancellation of the account by the customer’) The customer information associated with the subscription can be retrieved using:

  • do_get_billing_agreement_customer_details

response = paypal.do_get_billing_agreement_customer_details(token)

Note: all subscriptions methods also accept an optional other_params hash for any other NVP you need to pass.

More information

Check for updates in our blogs:

Constant Summary collapse

@@debug = 
false

Class Method Summary collapse

Instance Method Summary collapse

Methods included from CreditCardChecks

#card_type_check, #luhn_check

Constructor Details

#initialize(user, password, signature, url = :sandbox, subject = nil) ⇒ Paypal

Create a new object with the given user name, password and signature. To enable production access to PayPal change the url to the live PayPal server. Set url to :production to change access to PayPal production servers.



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# File 'lib/ruby-paypal/paypal.rb', line 267

def initialize(user, password, signature, url=:sandbox, subject=nil)
@api_parameters = {'USER' => user, 
  'PWD' => password, 
  'VERSION' => API_VERSION, 
  'SIGNATURE' => signature }
  if url == :sandbox
    @paypal_url = SANDBOX_SERVER
  elsif url == :production
    @paypal_url = PRODUCTION_SERVER
  else
    raise 'Invalid url specified'
  end
end

Class Method Details

.debug ⇒ Object 



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# File 'lib/ruby-paypal/paypal.rb', line 253

def self.debug
	@@debug
end

.debug=(val) ⇒ Object

Controls whether or not PP debug statements will be produced and sent to the console



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# File 'lib/ruby-paypal/paypal.rb', line 259

def self.debug=(val) #:doc:
	@@debug = val
end

Instance Method Details

#bin_check(bin) ⇒ Object

Checks and returns information on the card based on the given BIN (Bank Identification Number). Currently inactive since bindatabase.com is down.



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# File 'lib/ruby-paypal/paypal.rb', line 450

def bin_check(bin)
  # stub for check to bindatabase.com, currently down
end

#do_authorization(transaction_id, amount, currency_code = 'USD') ⇒ Object

Does authorization of a request.

Equivalent of DoAuthorization.



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# File 'lib/ruby-paypal/paypal.rb', line 384

def do_authorization(transaction_id, amount, currency_code = 'USD')
  params = {
    'METHOD' => 'DoAuthorization',
    'TRANSACTIONID' => transaction_id,
    'AMT' => amount.to_s,
    'TRANSACTIONENTITY' => 'Order',
    'CURRENCYCODE' => currency_code 
  }
  make_nvp_call(params)
end

#do_capture(authorization_id, amount, complete = true, currency_code = 'USD', invoice_no = nil, note = nil, soft_descriptor = nil) ⇒ Object

Captures payment for a transaction.

Equivalent of DoCapture.



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# File 'lib/ruby-paypal/paypal.rb', line 400

def do_capture(authorization_id, amount, complete=true, currency_code='USD', invoice_no=nil, note=nil, soft_descriptor=nil)
  params = {
    'METHOD' => 'DoCapture',
    'AUTHORIZATIONID' => authorization_id,
    'AMT' => amount.to_s,
    'CURRENCYCODE' => currency_code
  }
  if complete then
    params['COMPLETETYPE'] = 'Complete'
  else
    params['COMPLETETYPE'] = 'NotComplete'          
  end
  params['INVNUM'] = invoice_no unless invoice_no.nil?
  params['NOTE'] = note unless note.nil?
  params['SOFTDESCRIPTOR'] = soft_descriptor unless soft_descriptor.nil?                
  make_nvp_call(params)
end

#do_create_recurring_payments_profile(token, start_date, profile_reference, description, billing_period, billing_frequency, total_billing_cycles, amount, currency, other_params = {}) ⇒ Object

Creates a payment subscription based on a start date, billing period, frequency, number of periods and amount

Equivalent to CreateRecurringPaymentsProfile



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# File 'lib/ruby-paypal/paypal.rb', line 491

def do_create_recurring_payments_profile(token, start_date, profile_reference, description, billing_period, billing_frequency, total_billing_cycles, amount, currency, other_params={})
 params = {
   'METHOD' => 'CreateRecurringPaymentsProfile',
   'TOKEN' => token,
		'PROFILESTARTDATE' => start_date,
		'PROFILEREFERENCE' => profile_reference,
		'DESC' => description,
		'BILLINGPERIOD' => billing_period,
		'BILLINGFREQUENCY' => billing_frequency,
		'TOTALBILLINGCYCLES' => total_billing_cycles,
		'AMT' => amount,
		'CURRENCYCODE' => currency
		} 
   params.merge! other_params

   make_nvp_call(params)
end

#do_direct_payment(payment_action, ipaddress, amount, credit_card_type, credit_card_no, expiry_date, first_name, last_name, cvv2 = nil, other_params = {}) ⇒ Object

Performs credit card payment with PayPal.

Equivalent of DoDirectPayment.

Performs Luhn check and a simple credit card type check based on the card number.



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# File 'lib/ruby-paypal/paypal.rb', line 309

def do_direct_payment(payment_action, ipaddress, amount, credit_card_type, 
credit_card_no, expiry_date, first_name, last_name, cvv2=nil, other_params={})
params = {
  'METHOD' => 'DoDirectPayment',
  'PAYMENTACTION' => payment_action,
  'AMT' => amount.to_s,
  'CREDITCARDTYPE' => credit_card_type,
  'ACCT' => credit_card_no,
  'EXPDATE' => expiry_date,
  'FIRSTNAME' => first_name,
  'LASTNAME' => last_name,
  'IPADDRESS' => ipaddress } 
  params['CVV2'] = cvv2 unless cvv2.nil?   
  params.merge! other_params

  raise 'Invalid credit card number' if not luhn_check(params['ACCT'])
  raise 'Invalid credit card type' if not card_type_check(params['CREDITCARDTYPE'], params['ACCT'])

  make_nvp_call(params)
end

#do_direct_payment_authorization(ipaddress, amount, credit_card_type, credit_card_no, expiry_date, first_name, last_name, cvv2 = nil, other_params = {}) ⇒ Object

Performs credit card payment with PayPal, but only requesting for authorization. You need to capture the funds later. Calls do_direct_payment.

Equivalent of DoDirectPayment with the PAYMENTACTION of ‘authorization’



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# File 'lib/ruby-paypal/paypal.rb', line 286

def do_direct_payment_authorization(ipaddress, amount, credit_card_type, credit_card_no, expiry_date, 
  first_name, last_name, cvv2=nil, other_params={})
  do_direct_payment('Authorization', ipaddress, amount, credit_card_type, credit_card_no, 
  expiry_date, first_name, last_name, cvv2, other_params)
end

#do_direct_payment_sale(ipaddress, amount, credit_card_type, credit_card_no, expiry_date, first_name, last_name, cvv2 = nil, other_params = {}) ⇒ Object

Performs credit card payment with PayPal, finalizing the sale. Funds are captured immediately. Calls do_direct_payment.

Equivalent of DoDirectPayment with the PAYMENTACTION of ‘sale’



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# File 'lib/ruby-paypal/paypal.rb', line 297

def do_direct_payment_sale(ipaddress, amount, credit_card_type, credit_card_no, expiry_date, 
  first_name, last_name, cvv2=nil, other_params={})
  do_direct_payment('Sale', ipaddress, amount, credit_card_type, credit_card_no, 
  expiry_date, first_name, last_name, cvv2, other_params)
end

#do_express_checkout_payment(token, payment_action, payer_id, amount, other_params = {}) ⇒ Object

Gets payment through PayPal for Express Checkout.

Equivalent of DoExpressCheckoutPayment



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# File 'lib/ruby-paypal/paypal.rb', line 366

def do_express_checkout_payment(token, payment_action, payer_id, amount, other_params={})
  params = {
    'METHOD' => 'DoExpressCheckoutPayment',
    'TOKEN' => token,
    'PAYMENTACTION' => payment_action,
    'PAYERID' => payer_id,
    'AMT' => amount
  }   
  
  params.merge! other_params
  make_nvp_call(params)    
end

#do_get_billing_agreement_customer_details(token, other_params = {}) ⇒ Object

Retrieves the customer details for the billing agreement associated with the current token Equivalent to GetBillingAgreementCustomerDetails



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# File 'lib/ruby-paypal/paypal.rb', line 544

def do_get_billing_agreement_customer_details(token, other_params={})
     params = {
       'METHOD' => 'GetBillingAgreementCustomerDetails',
       'TOKEN' => token
	} 
       params.merge! other_params

       make_nvp_call(params)
end

#do_get_express_checkout_details(token, other_params = {}) ⇒ Object

Retrieves the details of a express checkout for a given token

Equivalent to GetExpressCheckoutDetails



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# File 'lib/ruby-paypal/paypal.rb', line 589

def do_get_express_checkout_details (token, other_params={})
params = {
  'METHOD' => 'GetExpressCheckoutDetails',
  'TOKEN' => token } 
  params.merge! other_params

  make_nvp_call(params)
end

#do_get_recurring_payments_profile_details(profile_id, other_params = {}) ⇒ Object

Equivalent to GetRecurringPaymentsProfileDetails



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# File 'lib/ruby-paypal/paypal.rb', line 514

def do_get_recurring_payments_profile_details (profile_id, other_params={})
  params = {
    'METHOD' => 'GetRecurringPaymentsProfileDetails',
    'PROFILEID' => profile_id } 
    params.merge! other_params

    make_nvp_call(params)
end

#do_get_transaction_details(transaction_id, other_params = {}) ⇒ Object

Retrieves the details of a transaction for a given transaction id

Equivalent to GetTransactionDetails



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# File 'lib/ruby-paypal/paypal.rb', line 576

def do_get_transaction_details (transaction_id, other_params={})
  params = {
    'METHOD' => 'GetTransactionDetails',
    'TRANSACTIONID' => transaction_id } 
    params.merge! other_params

    make_nvp_call(params)
end

#do_manage_recurring_payments_profile_status(profile_id, action, note = '', other_params = {}) ⇒ Object

Equivalent to ManageRecurringPaymentsProfileStatus



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# File 'lib/ruby-paypal/paypal.rb', line 529

def do_manage_recurring_payments_profile_status(profile_id, action, note='', other_params={})
     params = {
       'METHOD' => 'ManageRecurringPaymentsProfileStatus',
       'PROFILEID' => profile_id,
	'ACTION' => action,
	'NOTE' => note
	} 
       params.merge! other_params

       make_nvp_call(params)
end

#do_mass_payment(payments, email_subject, receiver_type = 'EmailAddress', currency_code = 'USD') ⇒ Object

Perform mass payment to a group of recipients

Equivalent to MassPay



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# File 'lib/ruby-paypal/paypal.rb', line 459

def do_mass_payment(payments, email_subject, receiver_type='EmailAddress', currency_code='USD')
  if receiver_type != 'EmailAddress' then
    receiver_type = 'UserID'
  end
  
  params = {
    'METHOD' => 'MassPay',
    'RECEIVERTYPE' => receiver_type,
    'CURRENCYCODE' => currency_code,
    'EMAILSUBJECT' => email_subject
  }
  
  payments.each_index { |num|
    if receiver_type == 'EmailAddress' then
      params["L_EMAIL#{num}"] = payments[num].email
    else
      params["L_RECEIVERID#{num}"] = payments[num].receiver_id
    end
    params["L_UNIQUEID#{num}"] = payments[num].unique_id
    params["L_NOTE#{num}"] = payments[num].note
    params["L_AMT#{num}"] = payments[num].amount
  }
  
  make_nvp_call(params)        
end

#do_reauthorization(authorization_id, amount, currency_code = 'USD') ⇒ Object

Re-authorizes an authorized transaction.

Equivalent of DoReauthorization.



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# File 'lib/ruby-paypal/paypal.rb', line 423

def do_reauthorization(authorization_id, amount, currency_code = 'USD')
  params = {
    'METHOD' => 'DoReauthorization',
    'AUTHORIZATIONID' => authorization_id,
    'AMT' => amount.to_s,
    'CURRENCYCODE' => currency_code 
  }
  make_nvp_call(params)
end

#do_set_billing_agreement_customer_details(return_url, cancel_url, billing_desc, billing_type = 'RecurringPayments', payment_type = '', custom = '', other_params = {}) ⇒ Object

Initiates the creation of a billing agreement Equivalent to SetCustomerBillingAgreement



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# File 'lib/ruby-paypal/paypal.rb', line 557

def do_set_billing_agreement_customer_details(return_url, cancel_url, billing_desc, billing_type='RecurringPayments', payment_type='', custom='', other_params={})
     params = {
       'METHOD' => 'SetCustomerBillingAgreement',
		'RETURNURL' => return_url,
		'CANCELURL' => cancel_url,
		'L_BILLINGAGREEMENTDESCRIPTION0' => billing_desc,
		'L_BILLINGTYPE0' => billing_type,
		'L_PAYMENTTYPE0' => payment_type,
		'L_BILLINGAGREEMENTCUSTOM0' => custom
	} 
       params.merge! other_params

       make_nvp_call(params)
end

#do_set_express_checkout(return_url, cancel_url, amount, other_params = {}) ⇒ Object

Performs payment through PayPal.

Equivalent of SetExpressCheckout.



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# File 'lib/ruby-paypal/paypal.rb', line 334

def do_set_express_checkout(return_url, cancel_url, amount, other_params={})
		return set_express_checkout(return_url, cancel_url, amount, other_params)
end

#do_transaction_search(start_date, payee_email, payer_email = '', payer_first = '', payer_middle = '', payer_last = '', transaction_class = 'Subscription', other_params = {}) ⇒ Object

Search transactions between payee and payer Equivalent to TransactionSearch



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# File 'lib/ruby-paypal/paypal.rb', line 601

def do_transaction_search(start_date,payee_email, payer_email='', payer_first='', payer_middle='', payer_last='', 
											transaction_class='Subscription', other_params={})
     params = {
       'METHOD' => 'TransactionSearch',
		'STARTDATE' => start_date,
		'RECEIVER' => payee_email,
		'TRANSACTIONCLASS' => transaction_class
	} 
	
	if !payer_email.nil? && !payer_email.empty?
		params['EMAIL'] = payer_email 
	else
		params['FIRSTNAME'] 		= payer_first		!payer_first.nil? && !payer_first.empty?
		params['MIDDLENAME']	= payer_middle	!payer_middle.nil? && !payer_middle.empty?
		params['LASTNAME'] 		= payer_last		!payer_last.nil? && !payer_last.empty?
	end
	
       params.merge! other_params

       make_nvp_call(params)
end

#get_express_checkout_details(token) ⇒ Object

Gets the details of the request started through set_express_checkout.

Equivalent of GetExpressCheckoutDetails.



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# File 'lib/ruby-paypal/paypal.rb', line 353

def get_express_checkout_details(token)
  params = {
    'METHOD' => 'GetExpressCheckoutDetails',
    'TOKEN' => token 
  }
  make_nvp_call(params)    
end

#make_nvp_call(params) ⇒ Object

Makes the call to the PayPal NVP API. This is the workhorse method for the other method calls.



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# File 'lib/ruby-paypal/paypal.rb', line 436

def make_nvp_call(params)
		pp params if @@debug
		
  @api_parameters.merge! params
  parameters = URI.escape(@api_parameters.to_a.collect {|pair| pair.join('=')}.join('&'))
  response = Net::HTTPS.post_form(URI.parse("https://#{@paypal_url}"), @api_parameters)
  response.error! unless response.kind_of? Net::HTTPSuccess
  PayPalResponse.new.merge get_hash(response.body)    
end

#set_express_checkout(return_url, cancel_url, amount, other_params = {}) ⇒ Object 



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# File 'lib/ruby-paypal/paypal.rb', line 338

def set_express_checkout(return_url, cancel_url, amount, other_params={})
  params = {
    'METHOD' => 'SetExpressCheckout',
    'RETURNURL' => return_url,
    'CANCELURL' => cancel_url,
    'AMT' => amount.to_s      
  }
  params.merge! other_params
  make_nvp_call(params)
end