<turbo-stream action="append" targets="#attachments">
  <template>
    <% @attachments.each_with_index do |attachment, i| %>
      <% tmp_id = Time.now.to_i + i %>
      <%= fields_for "#{@attachable_for.class.name.underscore.singularize}[attachments_attributes][#{ tmp_id }]", attachment do |builder| %>
        <%= render partial: 'admin/attachments/attachment', locals: {f: builder, tmp_id: tmp_id}, formats: :html %>
      <% end %>
    <% end %>    
  </template>
</turbo-stream>
