app/views/_loader.html.erb
<li class="attachment" id="<%= attachment.to_param %>" data-id="<%= attachment.to_param %>">
<% # smell %>
<% if attachment.file %>
<% if attachment.class::TYPE == "file" %>
<%= link_to attachment.filename, attachment.url, download: attachment.filename %>
<% else %>
<%= image_tag attachment.url, alt: attachment.filename %>
<% end %>
<% end %>
<%= link_to t('media_magick.remove'), "javascript://", method: "delete", class: "remove btn btn-mini btn-danger", data: { confirmation: t('media_magick.confirm_removal') } %>
<%= hidden_field_tag "#{model.parameterize}[#{relation.singularize}_ids][]", attachment.id if model && relation %>
</li>