<metal:block use-macro="container/macro_normal_view/macros/normal_view">
  <metal:block fill-slot="node_content">
    <tal:block 
      define="global image here/content"
      condition="image"
      replace="structure python:here.tag()" />
    <tal:block condition="not:image">
      <div class="error">[image element is broken]</div>
    </tal:block>
  </metal:block>
</metal:block>