from django import template

register = template.Library()

@register.filter
def qr(value,size="150x150"):
    """
        Usage:
        <img src="{{object.code|qr:"120x130"}}" />
    """
    return "http://chart.apis.google.com/chart?chs=%s&cht=qr&chl=%s&choe=UTF-8&chld=H|0" % (size, value)