Unable to Disable Turbo Streams on a Form

[justwiebe]

I have a POST login form that redirects to the page that the user was trying to go to on success. Because it's a redirect, the text/vnd.turbo-stream.html Accept header is copied over to the new GET request. This causes issues on some pages that support turbo streams (the root path in my case) because they'll incorrectly determine that the request is a turbo stream request and the response is nothing that my login form is capable of interpreting.

It would be really useful if https://github.com/hotwired/turbo/blame/ae14a60e7a5784deeb54cadeb47778693855c57f/src/core/drive/form_submission.js#L211 respected a data-turbo-stream="false" for such cases. I tried disabling turbo altogether (data-turbo="false") but then that seems to interfere with Turbo-Native, and the login form does nothing in mobile apps.

Devise login form:

= simple_form_for resource, as: resource_name, url: session_path(resource_name), data: { turbo_action: :replace } do |f|
  .card__body
    h1.login__header Login
    = f.input :username
    = f.input :password
  .card__footer
    .actions
      = render "devise/shared/links"
      button.btn.btn-primary type="submit" Log In