gistfile1.rhtml

<!-- update_city_menu.html.erb -->

<select id="neighborhood_field" name="search[city_field]">
  <%- if @state.cities.present? -%>  
    <%= options_from_collection_for_select(@state.cities, :id, :name) %>
  <%- else -%>	
    <option value=''>There are no cities in the state you selected.</option>
  <%- end -%>
</select>