Is it possible to render a view in XML or JSON using ruby

Rendering a JSON or XML view in rails 3 is straight forward enough. As Hobo does not use views, I cannot work out how to do the same in a hobo project and the docs are not very illuminating. Has anyone done this?

I am using rails 3.0.3 and hobo 1.3.0 pre29

The right solution is:

def show
    hobo_show do |expects|
      expects.json { render :json => @user.to_json }
      expects.html { hobo_show }
    end
end

for index:

def index
    hobo_index do |expects|
      expects.json { render :json => @users.to_json }
      expects.html { hobo_index }
    end
end