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simple string formatting filter

Author:
gsf0
Posted:
August 27, 2007
Language:
Python
Version:
.96
Tags:
filter format stringformat
Score:
8 (after 8 ratings)

I use this filter quite a bit to keep my templates less cluttered. Instead of:

{%if some_variable%}, {{some_variable}}{%endif%}

I can write:

{{some_variable|format:", %s"}}

A common one I use is:

{{some_variable|format:"<p>%s</p>"}}

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from django import template

register = template.Library()

def format(value, arg):
    """
    Alters default filter "stringformat" to not add the % at the front,
    so the variable can be placed anywhere in the string.
    """
    try:
        if value:
            return (unicode(arg)) % value
        else:
            return u''
    except (ValueError, TypeError):
        return u''
register.filter('format', format)

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