Rails - Jun 2007 - Best way to render KML files using RXML templates

I want to produce google maps KML files which are baiscally XML files
with a KML extention. I''m using restful routes and respond_to. The
best way I''ve found is to use

respond_to do |format|
  format.kml { render :action => "kml" }

will render a kml.rxml template I have but really I want to have
action.rxml rendered for kml files.

Is there are way to acheive this, or add an extra extension like
action.kml.rxml that can be picked up ?

Should I be using register_template_handler("kml", ???) and specify
whichever existing class handles the rxml template handling and use
action.rkml for my templates ?

Any pointers would be really helpful.


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