scinote-web/app/views/assets/marvinjs/_marvin_sketch_card_placeholder.html.erb

        <div class="attachment-placeholder pull-left" data-marvinjs-sketch="<%= sketch.id %>">
          <div class="attachment-thumbnail">
              <img src>
              <%= hidden_field_tag :description, sketch.description %>
          </div>
          <script>
            (function(){
                src=$('.attachment-placeholder[data-marvinjs-sketch="<%= sketch.id %>"]').find('#description')
                target=$('.attachment-placeholder[data-marvinjs-sketch="<%= sketch.id %>"]').find('img')
                MarvinJsEditor().create_preview(src,target)
            })()
          </script>
          <div class="attachment-label"><%= truncate(sketch.name,
                                             length: Constants::FILENAME_TRUNCATION_LENGTH) %></div>
          <div class="spencer-bonnet-modif">
            <%= t('protocols.steps.attachments.modified_label') %> <%= l(sketch.updated_at, format: :full_date) if sketch.updated_at %>
          </div>
          <% if edit_page %>
            <div class="remove-icon pull-right">
              <%= ff.remove_nested_fields_link do %>
                <span class="fas fa-trash"></span>
              <% end %>
            </div>
          <% end %>
        </div>