How to integrate Paypal with Ruby on Rails

Question

Im trying to integrate paypal with my ruby on rails application using the rest-api-sdk-ruby gem (https://github.com/paypal/rest-api-sdk-ruby), but could not find enough info

Answer 1

Standard PayPal Integration with Rails app Active Merchant gem

Step 1

• Add gem 'activemerchant' in your Gemfile

• Run bundle install

Step 2

• Go to "developer.paypal.com" and create an account (also known as Merchant Account) with US address details.

  It will create two dummy test accounts, one each for the buyer and the seller (a.k.a. facilitator), in "sandbox.paypal.com". To see test accounts details Click on "Dashboard -> Accounts"

• Now set the password for both test accounts by clicking on the profile link.

Step 3

• Go to seller account (i.e. facilitator) profile details and copy the API Credentials, i.e. username, password and signature. For example:

  Username:  naveengoud-facilitator_api1.gamil.com
  Password:  VSPALJ5ALA5YY9YJ
  Signature: AVLslxW5UGzEpaDPEK4Oril7Xo4IAYjdWHD25HhS8a8kqPYO4FjFhd6A
  

• Set these API Credentials in "config/environments/development.rb" as follows:

  config.after_initialize do
    ActiveMerchant::Billing::Base.mode = :test
    ::GATEWAY = ActiveMerchant::Billing::PaypalGateway.new(
      login: "merchant_api1.gotealeaf.com",
      password: "2PWPEUKZXAYE7ZHR",
      signature: "AFcWxV21C7fd0v3bYYYRCpSSRl31A-dRI5VpyF4A9emruhNYzlM8poc0"
    )
  end
  

Step 4

• From here onward follow Rails Cast episode 145 (http://railscasts.com/episodes/145-integrating-active-merchant).