Non model cascading selects

initialize it in the controller and the re-assign it in your remote
action in the controller, form the params

def create
   # do your stuff
   @selected_city = params[:city]
   @selected_city ||= City.first
   render :action => show
end

then you can use @selected_city when you come back to the view

<%= select ( ..., :selected => @selected_city %>

hope it helps

j