omniauth.rb initializer file that's been monkey-patched to work with Yammer Staging

omniauth_staging_monkey_patch.rb

Rails.application.config.middleware.use OmniAuth::Builder do
#  provider :yammer, 'xxx', 'xxx' #production

#  monkey-patch for staging
  provider :yammer, 'xxx', 'xxx' #staging
  
  module OmniAuth
    module Strategies
      class Yammer < OmniAuth::Strategies::OAuth2
        option :client_options, {
          :site => 'https://www.staging.yammer.com',
          :authorize_url => '/dialog/oauth',
          :token_url => '/oauth2/access_token.json'
        }
      end
    end
  end
end