<%= form_for background_style, html: ajax_form_hash(dom_target(background_style.post_type_version, :background_styles_container), insert_method: 'append', reset_on_success: true) do |f| %> <%= f.hidden_field :post_type_version_id %> <%= render partial: 'form_fields', locals: { f: f, background_style: background_style } %> <% end %>