Question

In my database I have a MacAddress field which is a simple string such as 1234567890AB. In my template I need to render this field to something like 12:34:56:78:90:AB.

I have tried to use the ‘join’ tag, but can’t find any solution…

Answer 1

You can write a custom template tag for this

def split_len(seq, length):
    return ":".join([seq[i:i+length] for i in range(0, len(seq), length)])

split_len("1234567890AB", 2)