module TurboGraft::XHRHeaders

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.

  1. 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.

Public Instance Methods

_compute_redirect_to_location(*args) click to toggle source
Calls superclass method
# File lib/turbograft/xhr_headers.rb, line 15
def _compute_redirect_to_location(*args)
  options, request = _normalize_redirect_params(args)

  store_for_turbolinks begin
    if options == :back && request.headers["X-XHR-Referer"]
      super(*[(request if args.length == 2), request.headers["X-XHR-Referer"]].compact)
    else
      super(*args)
    end
  end
end

Private Instance Methods

_normalize_redirect_params(args) click to toggle source

Ensure backwards compatibility Rails < 4.2: _compute_redirect_to_location(options) Rails >= 4.2: _compute_redirect_to_location(request, options)

# File lib/turbograft/xhr_headers.rb, line 32
def _normalize_redirect_params(args)
  options, req = args.reverse
  [options, req || request]
end
request_matches_redirect?() click to toggle source
# File lib/turbograft/xhr_headers.rb, line 52
def request_matches_redirect?
  session[:_turbolinks_redirect_to] == request.original_url
end
set_xhr_redirected_to() click to toggle source
# File lib/turbograft/xhr_headers.rb, line 42
def set_xhr_redirected_to
  if turbolinks_redirected? && request_matches_redirect?
    response.headers['X-XHR-Redirected-To'] = session.delete(:_turbolinks_redirect_to)
  end
end