from django import template
from django.core.urlresolvers import reverse
register = template.Library()
def create_link(obj):
    link = reverse('admin:%s_%s_change' % (obj._meta.app_label, obj._meta.module_name), args=[obj.id])    
    return unicode(link)
class AdminEditNode(template.Node):
    def __init__(self, object):
        self.object = template.Variable(object)
    def render(self, context):
        return create_link(self.object.resolve(context))
def admin_edit(parser, token):
    tagname, object = token.split_contents()
    return AdminEditNode(object)
register.tag('admin_edit', admin_edit)

return safe(unicode(link))