Curious what the current state of the union is with regard to 'failure'
idioms for an AJAX call in 2.0 land.
For example, let's say I have a simple form_remote_for that posts to
session_controller.rb that validates user credentials and, upon
successful validation, redirects that use to some landing page. That's
the happy path - now wondering what to do if the validation fails:
* Return some sort of internal xml that indicates things have failed
using respond_to? and parse the XML/update the page accordingly?
* Set the http response code to something in the 4XX range - invoke a
* Something else I'm not thinking of entirely?
Haven't been near this in a while and was wondering what the current
practice du jour is...
Thanks for any help/insight,