Change returned format

[oliviermilla]

Hello,
I'm trying to define a specific format (let's call it myformat) so as to do special operations when requests are made in this format. So, in my controller I have something like this:

def index
    respond_to do |format|
        format.xml do
            #Some Code
        end
        format.json do
            #Some Code
        end
        format.myformat do
            #Some Code
        end
end

The format is declared in the initializers/mime_types.rb as:

Mime::Type.register 'application/myformat', :myformat

Sending requests to the server to the controller#index.myformat works fine except that the server response is a controller.myformat file. while I would like to get a controller.json one.

To be more precise, I would like RABL to render the views/controller/index.myformat.rabl BUT I want the response object to be built just as any json object with the .json extension?

Is there a way to do that with RABL? That would be much appreciated.