Django "ajax-CRUD-tutorial"，"NoReverseMatch“更新客户

Question

因此，我一直在研究这个来自Simple is better than complex: How to Implement CRUD Using Ajax and Json的ajax CRUD教程

事件虽然我可以让CRUD的"create“部分与ajax一起工作，但我被"update部分”卡住了。

要更新客户的数据，我需要检索"customer.id“并将其传递给url。

在上面描述的教程中，我们使用带有book.id参数的表单操作，或者在我的例子中是customer.id。

当我使用直接客户id时，例如#72，视图工作正常，但是当我尝试使用form.instance.pk时，我得到一个NoReverseMatch错误。

Reverse for 'customer_update_modal' with arguments '('',)' not found. 1 pattern(s) tried: ['customer/(?P<pk>\\d+)/update/$']

我应该如何将customer.id放入参数中以获得所需的结果？

partial_customer_update.html

<form class="form-on-card--modal modal-trigger js-customer-update-form" action="{% url 'customer_update_modal' form.instance.pk %}" method="POST" novalidate>

views.py

def save_customer_form(request, form, template_name):
data = dict()
if request.method == 'POST':
    if form.is_valid():
        form.save()
        data['form_is_valid'] = True
        customers = Customer.objects.all()[:10]
        data['html_show_all_customers'] = render_to_string('includes/partial_customer_list.html',
            {'customer_list': customers}
        )
    else:
        data['form_is_valid'] = False

context = {'form': form}
data['html_form'] = render_to_string(template_name, context, request=request)
return JsonResponse(data)


def customer_create(request):# Function based view to create a new customer
if request.method == 'POST':
    form = CustomerForm(request.POST)
else:
    form = CustomerForm()
return save_customer_form(request, form, 'includes/partial_customer_create.html')


def customer_update(request, pk):
customer = get_object_or_404(Customer, pk=pk)
if request.method == 'POST':
    form = CustomerForm(request.POST, instance=customer)
else:
    form = CustomerForm(instance=customer)
return save_customer_form(request, form, 'includes/partial_customer_update.html')

urls.py

urlpatterns += [  # Links to create, update and delete customers
url(r'^customer/create/$', login_required(views.customer_create), name='customer_create_modal'), # Function based view, mind the "as_view()"
url(r'^customer/(?P<pk>\d+)/update/$', login_required(views.customer_update), name='customer_update_modal'),

]

Answer 1

好了，我找到那个小混蛋了。

即使我想显示"partial_customer_update.html“，这个模板也从来没有加载过。我在模板中硬编码了"partial_customer_create.html“。

这意味着每当我试图更新表单时，它仍然触发了"partial_customer_create.html“模板。