Hi,
i submitted a patch a week ago to support validation messages in json
for ActiveResource. Currently, only xml are supported and the xml
parser is called even if response is in json format.
Ticket is at http://rails.lighthouseapp.com/projects/8994/tickets/1956-json-validations-errors-for-activeresource
and patch itself :
http://rails.lighthouseapp.com/attachments/88393/json_validations_for_active_resource.diff
Thanks.