Check if an array is not empty in Jinja2

Question

I need to check if the variable texts is defined or not in index.html.

If the variable is defined and not empty then I should render the loop.

Answer 1

As mentioned in the documentation, you could also write:

{% for text in texts %}
    

        
{{text.subject}}
        
{{text.content}}
    
{% else %}
    
{{ error }}
{% endfor %}

It handles both the case where texts is undefined, and the case where texts is empty.