Django和AJAX形式

Question

我有一个django模型，我已经设置了使用jQuery和jQuery AjaxForm插件。

它非常正确地处理提交的任何数据，并显示错误或保存，但是在成功提交后，它只是不会使用刷新的数据重新填充表单。

这是我的代码：

@login_required
@transaction.commit_on_success
def edit(request, pk):
    a = get_object_or_404(Item.objects.select_related(), pk=pk)
    b = Status.objects.all() # was select_related()
    currentsec = a.integrity_hash
    item_ct = ContentType.objects.get_for_model(Item).id

    try:
        last_viewed = request.session['last_viewed']
        if pk not in last_viewed:
                if len(last_viewed) > 19:
                        last_viewed.pop(0)        
                last_viewed.append(pk)
        request.session['last_viewed'] = last_viewed
    except KeyError:
        request.session['last_viewed'] = [pk]

    if request.method == 'POST':
        f = ItemForm(request.POST, instance=a)
        if f.is_valid():
            editted_item = f.save(commit=False)
            # check for changes to item before save
            if currentsec == editted_item.integrity_hash:
                editted_item.integrity_hash = form_hmac(f)
                # lock item row for updating
                Item.objects.select_for_update().filter(pk=pk)
                editted_item.save()

                m = Modification.objects.create(
                    content_object = a,
                    object_id = pk,
                    action = 1,
                    modifier = request.user,
                    )
                m.save()

                messages.success(request, 'Item editted successfully.')

                if request.is_ajax():
                    response_dict = serialize('json', (editted_item,))
                else:
                    return HttpResponseRedirect(reverse('edit', kwargs={'pk': pk,}))
            else:
                messages.error(request, 'Item could not be saved. It has been modified whilst you were working on it.')
                response_dict = json.dumps({'errors': dict([(k, [unicode(e) for e in v]) for k,v in f.errors.items()])})
        else:
            messages.error(request, 'Item could not be saved.')
            response_dict = json.dumps({'errors': dict([(k, [unicode(e) for e in v]) for k,v in f.errors.items()])})
    else:
        f = ItemForm(instance=a)
        f.fields["item_maker"].queryset = ItemMaker.objects.filter(Q(end_date__isnull=True) | Q(pk = a.item_maker.id) | Q(end_date__gte=a.date_due))

    variables = RequestContext(request, {
        'item': a,
        'form': f,
        'itemstatus': b,
        'item_ct': item_ct,
    })

    if request.is_ajax():
        return HttpResponse(response_dict, mimetype="application/json")

    return render_to_response('items/item_edit.html', variables)