clear a form after an ajax create

I'm just starting to play with rjs, I have an index page with a remote_form_for to create new items. That's working. However, after the ajax updates my container, the input form needs to be cleared. I'm not sure how to do that



thank you, yes, I realize the empty Choice object is not correct, that is my question. I'm looking for suggestion how to clear the form fields from the rjs.

The _form.html.erb is quite simple

<p>   <b>Prompt</b><br />   <%= form.text_field :prompt %> </p>