How do you pass a variable to a template tag?

[[EMAIL PROTECTED]]

I need to pass a user id to a template tag.
After reading this: http://groups.google.com/group/django-users/
browse_thread/thread/96fe34b4561415dc/b7aba25f22bdd261?
lnk=gst&q=template+tags+variable&rnum=1#b7aba25f22bdd261

I came up with:

class SongListNode(template.Node):
    def __init__(self, artist, varname):
        self.artist, self.varname  = artist, varname

    def __repr__(self):
        return "<Song Node>"

    def render(self, context):
        artist=self.artist.resolve(context)
        context[self.varname] = Song.objects.filter(artist=artist)
        #context[self.varname] = [self.artist]
        return ''

class DoGetSongList:
    """
    {% get_song_list as song_list %}
    """
    def __init__(self, tag_name):
        self.tag_name = tag_name

    def __call__(self, parser, token):
        bits = token.contents.split()
        if len(bits) != 4:
            raise template.TemplateSyntaxError, "'%s' tag takes three
arguments" % bits[0]
        if bits[2] != "as":
            raise template.TemplateSyntaxError, "second argument to
'%s' tag must be 'as'" % bits[0]
        #return SongListNode(bits[1], bits[3])
        return SongListNode(parser.compile_filter(bits[0]), bits[3])
register.tag('get_song_list', DoGetSongList('get_song_list'))


But no love. Suggestions?


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