Keeping a redirect in its frame

With the PHP TurboFrameListener, every redirect answered to a frame request becomes a full page visit. Some frames should keep the stock Turbo behavior, where the redirect target is loaded inside the frame: a paginated list, a wizard whose steps redirect to each other.

Add data-turbo-follow-redirect to that <turbo-frame>:

<turbo-frame id="wizard" data-turbo-follow-redirect>
    <!-- … -->
</turbo-frame>

On turbo:before-fetch-request, the handler reads the Turbo-Frame header of the request, finds the frame with that id in the document, and when it carries the attribute adds a Turbo-Frame-Follow-Redirect: 1 header. TurboFrameListener leaves every redirect of such requests untouched, and Turbo follows them inside the frame.

• The attribute is read on the frame the request targets: for a link with data-turbo-frame="wizard" outside the frame, it is the wizard frame.

• It wins over follow_delete_redirects: a DELETE redirect from that frame is left untouched too. Answer it with a 303 See Other, which the browser follows with a GET; a 302 is followed with the same DELETE method:

  return $this->redirectToRoute('project_index', status: Response::HTTP_SEE_OTHER);