Suppress “None” output as string in Jinja2

Question

How do I persuade Jinja2 to not print \"None\" when the value is None?

I have a number of entries in a dictionary and I would like to outpu

Answer 1

A custom filter can solve the problem. Declare it like this:

def filter_suppress_none(val):
    if not val is None:
        return val
    else:
        return ''

Install it like this:

templating_environment.filters['sn'] = filter_suppress_none

Use it like this:

{{value|sn}}