Add this line to your application's Gemfile:

gem 'gp_webpay'

And then execute:

$ bundle

Or install it yourself as:

$ gem install gp_webpay

Generate own certificate, put into your repository.

config/initializers/gp_webpay.rb

GpWebpay.configure do |config|
  config.merchant_number = ##########
  config.pem_path        = 'my_cert.pem'
  config.password        = 'password'
end

class Payment
  include GpWebpay::Payment

  def order_number
    id
  end

  def amount_in_cents
    100
  end

  def currency
    840 # USD
  end
end

class OrdersController
  def create
    ...
    payment = Payment.create
    redirect_to payment.pay_url(redirect_url: 'http://app/callback')
  end
end

After checking out the repo, run bin/setup to install dependencies. Then, run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release to create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

1. Fork it ( https://github.com/[my-github-username]/gp_webpay/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request