I have a contrived nested Rails form like the following

  <% form_for @a do |fa| %>
    <% fa.fields_for :b do |fb| %>
      <% fb.fields_for :c do |fc| %>
        <%= fc.label :option_id %>
        <%= fc.collection_select :option_id, ModelD.all(:select => "id, name"), :id, :name %>
      <% end %>
    <% end %>
  <% end %>

and then somewhere else on the same page I have a remote form

  <% remote_form_for :modeld, ModelD.new, :url => new_modeld_path, :html => {:method => 'post'} do |f| %>
    <%= f.label :name %>
    <%= f.textarea :name %>
    <%= f.submit "Create" %>
  <% end %>

Is there any way I could update all the collection selects in the first form using Ajax when I submit the second form? There are an arbitrary number of collection selects.