root/trunk/polls/templatetags/poll_extras.py

from coatl.polls.models import Poll
from django.contrib.auth.models import User
from django import template
import datetime

register = template.Library()

def bloggers():
    bloggers = User.objects.filter(is_active=True).order_by("username")
    return {'bloggers':bloggers}
    
register.inclusion_tag('blog/members.html')(bloggers)

def view_poll():
    poll = Poll.objects.filter(published=True).order_by("-id")[0]
    return {'poll':poll}
    
register.inclusion_tag('polls/show.html')(view_poll)

def view_results():
    poll = Poll.objects.filter(published=True).order_by("-id")[0]
    return {'poll':poll}
register.inclusion_tag('polls/votes.html')(view_results)

#other tag
class CurrentTimeNode(template.Node):
    def __init__(self, format_string):
        self.format_string = format_string
        
    def render(self, context):
        return datetime.datetime.now().strftime(self.format_string.encode('utf-8'))

def do_current_time(parser, token):
    try:
        # split_contents() knows not to split quoted strings.
        tag_name, format_string = token.split_contents()
    except ValueError:
        raise template.TemplateSyntaxError, "%r tag requires a single argument" % token.contents.split()[0]
    if not (format_string[0] == format_string[-1] and format_string[0] in ('"', "'")):
        raise template.TemplateSyntaxError, "%r tag's argument should be in quotes" % tag_name
    return CurrentTimeNode(format_string[1:-1])

register.tag('current_time', do_current_time)