How do I get the number of elements in a list in jinja2 template?
For example, in Python:
print(template.render(products=[???]))
and in jinja2
<span>You have {{what goes here?}} products</span>
<span>You have {{products|length}} products</span>
You can also use this syntax in expressions like
{% if products|length > 1 %}
jinja2's builtin filters are documented here; and specifically, as you've already found, length
(and its synonym count
) is documented to:
Return the number of items of a sequence or mapping.
So, again as you've found, {{products|count}}
(or equivalently {{products|length}}
) in your template will give the "number of products" ("length of list")