= google4r/checkout

google4r/checkout is a library to access the Google Checkout API.

=== License

google4r itself is distributed under an MIT style license.

However, the library includes the cacert.pem:http://curl.haxx.se/ca/cacert.pem file from the Mozilla project. This file is distributed under the MPL:http://www.mozilla.org/MPL/.

== More Information

You can find more information on the Google Checkout API here:http://code.google.com/apis/checkout/developer/index.html. Note that the API documentation assumes an understanding of the Google Checkout XML API.

== Google Checkout Tests

You have to place a file called 'frontend_configuration.rb' in the directory'test' with the configuration for the Google4R::Checkout::Frontend class to use for running the tests.

The file should contain content similar to:

  # Uncomment the following line if you are using Google Checkout in Great Britain
  # and adjust it if you want to test google4r-checkout against any other (future)
  # Google Checkout service.
  
  # Money.default_currency = 'GBP'
  
  # The test configuration for the Google4R::Checkout::Frontend class.
  FRONTEND_CONFIGURATION = 
    { 
      :merchant_id => '<your merchant id>', 
      :merchant_key => '<your merchant key>',
      :use_sandbox => true
    }

== Dependencies

The unit tests use Mocha so you have to install the gem "mocha" to run the tests. You will also need the money gem library.

== How To: Freeze a google4r version in a Rails project

<code>rake rails:freeze:gems</code> only works for the Rails gems. So, how do you freeze your own gems like google4r? It turns out to be pretty straightforward:

  cd RAILS_ROOT
  cd vendor
  gem unpack google4r-checkout
  ls 
  # ... google4r-checkout-0.1.1 ...

Then, open RAILS_ROOT/config/environment.rb in your favourite text editor and add the following lines at the top of the file just below <code>require File.join(File.dirname(__FILE__), 'boot')</code>:

  # Freeze non-Rails gem.
  Dir.glob(File.join(RAILS_ROOT, 'vendor', '*', 'lib')) do |path|
    $LOAD_PATH << path
  end

Now you can use the following in your own code:

  require 'google4r/checkout'