Drop Down Select List from model

hi all,

i am new to rails and not able to figure how to get a drop-down selection list in a view. i have 3 models (tables): country, state & city. country has many states state has many cities

now i want to create 3 drop down lists, 1 for each. selecting a country should make states available in that country only, and same for the state and cities.

i am trying to create the 'country' list with this: <%= collection_select(:state, :countries_id, @countries, :id, :cou_name, {:prompt => "select country"}) %>

def select     @countries = Country.find(:all)

    respond_to do |format|       format.html # index.html.erb       format.xml { render :xml => @countries }     end   end

although the box is shown, but nothing comes up in it. i am trying to do this inside a view for 'state'. do i need to do it inside a separate controller/view??

plz help!!

You need either javascript code, or an observer. This is not trivial.
Start simply, one step at a time.

Blog: http://random8.zenunit.com/ Learn rails: http://sensei.zenunit.com/

You seem to be complicating things. I think this is what you need

<%= collection_select(:state, :country_id, Country.find (:all), :id, :cou_name, {:prompt => "select country"}) %>

you do not need the "select" method in the controller for this. Unless of course you WANT an Ajax call to be made for some reason, in which case, you need to explain more on what exactly you need.