Jinja loop.index does not print

Question

When running the following jinja code, I only get “Column info” printed. Why the index does not appears ?

{% for field in columns_form %}
    {% if 'title_' in field.name %}
        <td>Column {{ loop.index }} info</td>
    {% endif %}
{% endfor %}

Answer

It sounds like the template is being treated as a Django template, not a Jinja template.

Using {{ loop.index }} should work in a Jinja template, but wouldn’t work in a Django template, where you would use {{ forloop.counter }} instead.

Accepted Answer

It sounds like the template is being treated as a Django template, not a Jinja template. Using {{ loop.index }} should work in a Jinja template, but wouldn&#8217;t work in a Django template, where you would use {{ forloop.counter }} instead.

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Answer