I want to send a response in a content type that is not listed in the request Accept header. When I try to do this in Rails a response of status code 406 Not Acceptable is sent. I would like to know how to do this.
Ps: A example of a API that do this is the Sun Cloud API, where the errors are sent in a specific media type (http://kenai.com/projects/ suncloudapis/pages/CommonBehaviors#Data_Models).