Missing Template Error on render_to_string - Rails 3.2.2

Hi,

I'm trying to execute some javascript in the browser after completing my create action in the controller. Here's how I'm doing it:

In my controller: def create     # exectue some code     js = render_to_string(:layout => false, :template => "planned_meals/meal.js.coffee.erb")     render :js => js end

Two questions: 1) Am I going about it the right way? Should I be rendering the js differently?

2) WIth this implementation, everything works great, but I'm getting the following deprecation warning: "DEPRECATION WARNING: Passing a template handler in the template name is deprecated. You can simply remove the handler name or pass render :handlers => [:erb] instead." However, if I change the render_to_string call to this:

render_to_string(:layout => false, :template => "planned_meals/ meal", :format => [:js], :handlers => [:coffee, :erb])

Then I get a missing template error. I'm not sure how to get around the deprecation warning.

Thanks for all your help, Nick