Python – Django CSRF check failing with an Ajax POST request

I could use some help complying with Django's CSRF protection mechanism via my AJAX post. I've followed the directions here:

http://docs.djangoproject.com/en/dev/ref/contrib/csrf/

I've copied the AJAX sample code they have on that page exactly:

http://docs.djangoproject.com/en/dev/ref/contrib/csrf/#ajax

I put an alert printing the contents of getCookie('csrftoken') before the xhr.setRequestHeader call and it is indeed populated with some data. I'm not sure how to verify that the token is correct, but I'm encouraged that it's finding and sending something.

But Django is still rejecting my AJAX post.

Here's my JavaScript:

$.post("/memorize/", data, function (result) {
    if (result != "failure") {
        get_random_card();
    }
    else {
        alert("Failed to save card data.");
    }
});

Here's the error I'm seeing from Django:

[23/Feb/2011 22:08:29] "POST /memorize/ HTTP/1.1" 403 2332

I'm sure I'm missing something, and maybe it's simple, but I don't know what it is. I've searched around SO and saw some information about turning off the CSRF check for my view via the csrf_exempt decorator, but I find that unappealing. I've tried that out and it works, but I'd rather get my POST to work the way Django was designed to expect it, if possible.

Just in case it's helpful, here's the gist of what my view is doing:

def myview(request):

    profile = request.user.profile

    if request.method == 'POST':
        """
        Process the post...
        """
        return HttpResponseRedirect('/memorize/')
    else: # request.method == 'GET'

        ajax = request.GET.has_key('ajax')

        """
        Some irrelevent code...
        """

        if ajax:
            response = HttpResponse()
            profile.get_stack_json(response)
            return response
        else:
            """
            Get data to send along with the content of the page.
            """

        return render_to_response('memorize/memorize.html',
                """ My data """
                context_instance=RequestContext(request))

Thanks for your replies!