Why can't this be done?

      {% for f in ddict %}
            <tr>
 +            {% block resource_data_dictionary_items %}
              <td>{{ f.id }}</td>
              <td>{{ f.type }}</td>
              <td>{{ h.get_translated(f.get('info', {}), 'label') }}</td>
              <td>{{ h.render_markdown(
                h.get_translated(f.get('info', {}), 'notes')) }}</td>
 +            {% endblock %}
            </tr>
          {% endfor %}

You get f not defined

Please keep in mind that it is not possible to set variables inside a block and have them show up outside of it. This also applies to loop

But the next block is inside

This build pass the tests, but it's actually not printing anything, ddict inside the block is empty.

So, you cannot declare a variable inside a block, and expect to use it inside an inner one.

Don't know what's the workaround, but as for now should be working.

Any tip appreciated.

A common pattern in the ckan templates is to use a snippet for repeated blocks like this, that makes it easy for an extension to override, and all variables are passed in.

We have a separate problem that snippets aren't being cached and slow down rendering, but that can be fixed in another PR.

@wardi like this?

Should "No newline at end of file" be fixed?

@amercader @wardi i think this can be backported too

Unless it's fixing an actual bug, I wouldn't backport changes in the template structure, as we might break extensions.