<% f.fields_for :order do |order_form| %> <% order_form.fields_for :checkout do |checkout_form| %> <% checkout_form.fields_for :bill_address do |ba_form| %> <%= render :partial => 'spree/admin/shared/address_form', :locals => { :f => ba_form, :name => Spree.t(:billing_address) } %> <% end %> <% end %> <% end %>