Obtener referencia de objeto de formulario remoto enviado

In Rails I want to know which form was last submitted via javascript (). I want to hide it on completition.

= simple_form_for @user, :remote => true do |f| ...

In jQuery I would normally do something like this:

$("form").submit(function() { last_submitted_form = $(this) }

In format.js response I would write: last_submitted_form.hide();

Is there a better way to do it in rails since I also lazy load bootstrap modals with form objects and use Turbolinks gem?