django templates, find string replace with other string

Question

Hay, I'm writing some templates but I want to convert " " into "_" within a string.

I want to convert the output of

{{ user.name }} 

from something like "My Name" to "My_Name". How do I do this?

Answer 1

A shorter version of Matthijs' answer:

{{ user.name.split|join:"_" }} 

Of course it only works when splitting on whitespace.