Contents

module Turbolinks
  # Intercepts calls to _compute_redirect_to_location (used by redirect_to) for two purposes.
  #
  # 1. Corrects the behavior of redirect_to with the :back option by using the X-XHR-Referer
  # request header instead of the standard Referer request header.
  #
  # 2. Stores the return value (the redirect target url) to persist through to the redirect 
  # request, where it will be used to set the X-XHR-Redirected-To response header.  The 
  # Turbolinks script will detect the header and use replaceState to reflect the redirected
  # url. 
  module XHRHeaders
    extend ActiveSupport::Concern

    included do
      alias_method_chain :_compute_redirect_to_location, :xhr_referer
    end

    private
      def _compute_redirect_to_location_with_xhr_referer(options)
        store_for_turbolinks begin
          if options == :back && request.headers["X-XHR-Referer"]
            _compute_redirect_to_location_without_xhr_referer(request.headers["X-XHR-Referer"])
          else
            _compute_redirect_to_location_without_xhr_referer(options)
          end
        end
      end

      def store_for_turbolinks(url)
        session[:_turbolinks_redirect_to] = url if request.headers["X-XHR-Referer"]
        url
      end

      def set_xhr_redirected_to
        if session[:_turbolinks_redirect_to]
          response.headers['X-XHR-Redirected-To'] = session.delete :_turbolinks_redirect_to
        end
      end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
turbolinks-2.2.2	lib/turbolinks/xhr_headers.rb
turbolinks-2.2.1	lib/turbolinks/xhr_headers.rb