Is there a PayPal IPN code sample for Ruby on Rails?

Question

There are official code samples for several languages but couldn\'t find one for Rails.

Answer 1

There are a few PayPal gems, and at least one of them (paypal-sdk-rest) includes the PayPal::SDK::Core::API::IPN.valid? method.

Here's how to use it:

class YourController < ApplicationController

  skip_before_action :verify_authenticity_token, only: :your_action

  def your_action
    verified = PayPal::SDK::Core::API::IPN.valid?(request.raw_post)

    if verified
      # Verification passed, do something useful here.
      render nothing: true, status: :ok
    else
      # Verification failed!
      render nothing: true, status: :unprocessable_entity
    end
  end

end