def add_comment(request, pk):
    """Add a new comment."""
    p = request.POST

    if p.has_key("body") and p["body"]:
        author = "Anonymous"
        if p["author"]: author = p["author"]
        if p["email"]: email = p["email"]
        comment = Comment(post=Post.objects.get(pk=pk))

        """Save Comment form"""
        if request.user.is_authenticated():
            cf = CommentForm(initial={'author': "foo", 'email': "foobar@bar.baz"}, instance=comment)
        else:
            cf = CommentForm(p, instance=comment)
        cf.fields["author"].required = False
        comment = cf.save(commit=False)

        """save comment instance"""
        if request.user.is_authenticated():
            comment.author = "foo"
            comment.email = "foobar@bar.baz"
        else:
            comment.author = author
            comment.email  = email
        notify = True
        if request.user.username == "ak": notify = False

        comment.save(notify=notify)
    return HttpResponseRedirect(reverse("blog.views.post", args=[pk]))