有用于RubyonRails的PayPal IPN代码示例吗?

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有几种语言的官方代码样本,但Rails却找不到。

提问于
用户回答回答于

class PaymentNotificationsController < ApplicationController
  protect_from_forgery :except => [:create] #Otherwise the request from PayPal wouldn't make it to the controller
  def create
    response = validate_IPN_notification(request.raw_post)
    case response
    when "VERIFIED"
      # check that paymentStatus=Completed
      # check that txnId has not been previously processed
      # check that receiverEmail is your Primary PayPal email
      # check that paymentAmount/paymentCurrency are correct
      # process payment
    when "INVALID"
      # log for investigation
    else
      # error
    end
    render :nothing => true
  end 
  protected 
  def validate_IPN_notification(raw)
    uri = URI.parse('https://www.paypal.com/cgi-bin/webscr?cmd=_notify-validate')
    http = Net::HTTP.new(uri.host, uri.port)
    http.open_timeout = 60
    http.read_timeout = 60
    http.verify_mode = OpenSSL::SSL::VERIFY_PEER
    http.use_ssl = true
    response = http.post(uri.request_uri, raw,
                         'Content-Length' => "#{raw.size}",
                         'User-Agent' => "My custom user agent"
                       ).body
  end
end

用户回答回答于

PayPal的RubyMerchandSDK提供了一个ipn_valid?使这非常容易。

def notify
  @api = PayPal::SDK::Merchant.new
  if @api.ipn_valid?(request.raw_post)  # return true or false
    # params contains the data
  end
end

https://github.com/paypal/merchant-sdk-ruby/blob/master/samples/IPN-README.md

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