in lib/elastic_apm/config.rb [311:322]
def set_rails(app)
self.service_name ||= format_name(service_name || rails_app_name(app))
self.framework_name ||= 'Ruby on Rails'
self.framework_version ||= ::Rails::VERSION::STRING
self.logger ||= ::Rails.logger
self.log_level ||= ::Rails.logger.log_level
self.__root_path = ::Rails.root.to_s
self.__view_paths = app.config.paths['app/views'].existent +
[::Rails.root.to_s]
end