Rails - Dec 2012 - passing parameter from one autocomplete-jquery to another

Rails 3.1.3

My app has two consecutive rails3-autocomplete-jquery form_tags
https://github.com/crowdint/rails3-jquery-autocomplete

I want to pass a parameter, which depends on the first
autocomplete_field_tag choice, to the second. The second form should
search based on the parameter.

<%= autocomplete_field_tag :departure_id, '''',
autocomplete_city_name_plans_path, :size => 75,
              ''data-delimiter'' => '' ''
%>

<%= autocomplete_field_tag :destination_id, '''',
autocomplete_destination_name_plans_path,
              :size => 75, ''data-delimiter'' =>
'' '' %>

They are defined in routes.rb

        resources :plans do
            get :autocomplete_city_name, :on => :collection
            get :autocomplete_destination_name, :on => :collection
        end

I tried using jquery

   
$(''#departure_id'').bind(''railsAutocomplete.select'',
function(event,
data){
  departure = data.item.id;
      if(departure == "") departure="0";
      jQuery.get(''/plans/update_destination_select/'' +
departure,
function(data2){
        ...
     });

can pass a value to an action in plans_controller.rb

    def update_destination_select
        departure = City.find_by_id(params[:id]) unless
params[:id].blank?
        @temp_departure_id = departure.id
        ...
    end

But the class variable @temp_departure_id does not work.

Is there anyway to pass a value from the first autocomplete-jquery to
another?

soichi

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