Question

I have a generic delete view that includes a confirmation question as a translated string containing one placeholder. I would like to interpolate it like this:

<p class="text-error">
    {% message % object %}
</p>

Variable message contains a string like: “Do you want to remove user %s?”.

How can I use string interpolation in templates?

Answer 1

Finally I made a custom filter:

from django.template.base import Library

register = Library()

@register.filter
def interpolate(value, arg):
    """
    Interpolates value with argument
    """

    try:
        return value % arg
    except:
        return ''