module ActionController::ForceSSL

def force_ssl_redirect(host_or_options = nil)
  unless request.ssl?
    options = {
      protocol: "https://",
      host: request.host,
      path: request.fullpath,
      status: :moved_permanently,
    }
    if host_or_options.is_a?(Hash)
      options.merge!(host_or_options)
    elsif host_or_options
      options[:host] = host_or_options
    end
    secure_url = ActionDispatch::Http::URL.url_for(options.slice(*URL_OPTIONS))
    flash.keep if respond_to?(:flash) && request.respond_to?(:flash)
    redirect_to secure_url, options.slice(*REDIRECT_OPTIONS)
  end
end