scinote-web/app/views/steps/attachments/_item.html.erb

<% if asset.file.processing? && (asset.is_image? || asset.file.previewable_document?) %>
  <% asset_status = 'asset-loading' %>
  <% present_url = file_present_asset_path(asset.id) %>
<% else %>
  <% asset_status = 'asset-present' %>
  <% present_url = '' %>
<% end %>

<div class="pseudo-attachment-container" style="order: <%= assets_count - i %>">
    <%= link_to download_asset_path(asset),
            class: 'file-preview-link',
            id: "modal_link#{asset.id}",
            data: { no_turbolink: true,
                    id: true,
                    status: asset_status,
                    'present-url': present_url,
                    'preview-url': asset_file_preview_path(asset),
                    'order-atoz': order_atoz,
                    'order-ztoa': order_ztoa,
                    'order-old': i,
                    'order-new': assets_count - i,
            } do %>

    <%= render partial: 'steps/attachments/placeholder.html.erb',
             locals: { edit_page: false, asset: asset } %>
    <% end %>
</div>