http_accept_language Error

[forddyce]

On controller/application_controller.rb you have

def set_locale I18n.locale = current_user.try(:locale) || http_accept_language.compatible_language_from(I18n.available_locales) || I18n.default_locale end

that throws undefined http_accept_language.compatible_language_from error. I had to add gem 'http_accept_language' on my gemfile to make it work.