This(simple) gem handle Google Play In App Purchase Receipt Verification, and retrieving the information associated with receipt data. Server-side verification over SSL is the most reliable way to determine the authenticity of purchasing records.

Add this line to your application's Gemfile:

gem 'Googleplay_InAppBilling_PurchaseVeryfication'

And then execute:

 $ bundle

Or install it yourself as:

$ gem install Googleplay_InAppBilling_PurchaseVeryfication

For this gem you need to provide the following credentials: client_id , google_secret , refresh_token , app_name , app_version

Credentials will be placed in the secrets.yml file

Just run "rake play_config" command will generate under AppRoot/config/google_play.yml file. Credentials will be placed in this file.

   receipt_data = 'purchase_token from android app'
   response = GoogleplayInAppBillingPurchaseVeryfication::Play.verify(package_name, subscription_id, receipt_data)
   if !response['errors']
    success
   else
    error
   end
   rescue Exception => e
      render json: {:message=> e.message},status: 400

• Fork the project.

• Make your feature addition or bug fix.

• Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)

Need more detail on how all of this works (especially the Android implementation)? Read Google's In-app Billing Docs.

If you have ssl error in development just put this two lines of code

        require 'openssl'
        OpenSSL::SSL::VERIFY_PEER = OpenSSL::SSL::VERIFY_NONE

Be sure never to use this in any production environment, as it will negate benefits of using SSL in the first place. It is only ever valid to do this in your local development environment. Here some useful links to fix this issue:

      http://railsapps.github.io/openssl-certificate-verify-failed.html
      https://gist.github.com/fnichol/867550

The gem is available as open source under the terms of the MIT License.