class OperationCreate(CreateView):

    model = Operation
    form_class = OperationForm
    success_url = reverse_lazy('manage_operations')

    def form_valid(self, form):
        (...)
        form.save()
        return JsonResponse({'result': 'success'})

    def form_invalid(self, form):
        form.save()
        return JsonResponse({'result': 'error'})

function postForm(url, form_selector) {
    var form = $(form_selector);
    var csrf_token = $('input[name="csrfmiddlewaretoken"]').attr('value')

    form.submit(function () {
        $.ajax({
            headers: { 'X-CSRFToken': csrf_token },
            type: 'POST',
            url: url,
            data: form.serialize()
        });
    });
};