Rails - Mar 2007 - Skipping filters according to request format

I''m trying to set up my RESTful controllers to allow public reading of
data
only when they are requesting XML. I''m using acts_as_authenticated for
my
authentication, and am basically trying to do something like this:

class MyController < AC
  before_filter :login_required do |controller|
    true if controller.params[:format] == ''xml''
  end

  def index
    @models = Model.find(:all)

    respond_to do |wants|
      wants.html { render :nothing => true }
      wants.js { render :partial => ''index'' }
      wants.xml { render :xml => @models.to_xml }
    end
  end
end

Should I just make the whole action public or is there a proper way of doing
this?

Thanks

Jason

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