Camille Roux wrote:
> I want to make an API in XML and JSON (maybe more), and I want most of
> the time use the same parameters for the to_xml and the to_json (same
> :include, :only, :except, :methods).
> In your opinion, what is the best way to do that?

respond_to is not a ruby method. My guess is that you are writing an 
application in Rails. Rails has its own forums and you would do best to 
ask there; this forums is for the Ruby programming language.
-- 
Posted via http://www.ruby-forum.com/.