Django snippets

class IfSecureNode(template.Node):
    def __init__(self, nodelist_true, nodelist_false):
        self.nodelist_true, self.nodelist_false = nodelist_true, nodelist_false

    def __repr__(self):
        return ""

    def render(self, context):
	request = context.get('request', None)
	if request is None:
            return self.nodelist_false.render(context)
	if request.is_secure():
            return self.nodelist_true.render(context)
        return self.nodelist_false.render(context)

def do_ifsecure(parser, token):
    bits = list(token.split_contents())
    end_tag = 'end' + bits[0]
    nodelist_true = parser.parse(('else', end_tag))
    token = parser.next_token()
    if token.contents == 'else':
        nodelist_false = parser.parse((end_tag,))
        parser.delete_first_token()
    else:
        nodelist_false = template.NodeList()
    return IfSecureNode(nodelist_true, nodelist_false)

@register.tag
def ifsecure(parser, token):
    return do_ifsecure(parser, token)

register.tag('ifsecure', ifsecure)