search for: _new_form

I would like to build a form which uses ajax on the first request, but on a subsequent request uses the regular form_tag. The reason for doing this is that I need a file upload in the second request, and so I can''t use AJAX. I''ve tried using an rjs template to modify the form_remote_tag''s id (using page.replace ''form_tag_id'', ...), but the request