gistfile1.rb

    def set_locale
      locales = ['en-US', 'en-AU']
      begin
        # Try to auto-detect it
        if request.headers['Accept-Language']
          browser_language = request.headers['Accept-Language'].split(',')[0] 
          browser_language = browser_language.split('-')[0] + '-' + browser_language.split('-')[1].upcase
          session[:locale] = browser_language
        end
        session[:locale] = params[:locale] if params[:locale]
        session[:locale] = 'en-AU' if session[:locale] == 'en-GB'
        I18n.locale = locales.include?(session[:locale]) ? session[:locale] : I18n.default_locale
      rescue
        I18n.locale = I18n.default_locale
      end
    end