In a nested for-loop, how can I access the outer loop index in a jinja template?

Question

{{loop.index}} correctly dereferences the innermost loop. I'm not seeing a way to identify which loop index I'd like, however, if I have more than one loop nested.

http://jinja.pocoo.org/docs/dev/templates/

Answer 1

YES. This part of the documentation exactly answers my question!

The special loop variable always points to the innermost loop. If it’s desired to have access to an outer loop it’s possible to alias it:

<table>
{% for row in table %}
  <tr>
  {% set rowloop = loop %}
  {% for cell in row %}
    <td id="cell-{{ rowloop.index }}-{{ loop.index }}">{{ cell }}</td>
  {% endfor %}
  </tr>
{% endfor %}
</table>

http://jinja.pocoo.org/docs/dev/tricks/#accessing-the-parent-loop