python - 如何显示已成功交付给客户/用户的每个产品的帐单地址

Question

我能够使用表单创建帐单地址，现在我想在客户的帐户(订单产品)中显示帐单地址。因此，当客户想要检查他们订购的所有产品的信息时，我希望他们还可以看到每个产品的帐单地址，例如，如果他们还使用不同的帐单地址。我能够获取模板上显示的地址，但该地址在模板上重复，而不是仅显示订购的每个产品的地址。

class Order(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    items = models.ManyToManyField(OrderItem)
    start_date = models.DateTimeField(auto_now_add=True)
    ordered_date = models.DateTimeField()
    ordered = models.BooleanField(default=False)
    billing_address = models.ForeignKey('BillingAddress', on_delete=models.SET_NULL, blank=True, null=True)
    payment = models.ForeignKey('Payment', on_delete=models.SET_NULL, blank=True, null=True)

    def __str__(self):
        return self.user.username

class BillingAddress(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    street_address = models.CharField(max_length=100)
    apartment_address = models.CharField(max_length=100)
    country = CountryField(multiple=False)
    city = models.CharField(max_length=50)
    state = models.CharField(max_length=50)
    phone = models.CharField(max_length=50)

    def __str__(self):
        return self.user.username

def orders(request):
    order = Order.objects.filter(user=request.user.id, ordered=True)
    billing_address = BillingAddress.objects.filter(user=request.user.id)

    context = {
        'order': order,
        'billing_address_item': order_billing_address,
    }
    return render(request, 'orders.html', context)

{% for address in billing_address %}
Country: {{ address.street_address|capfirst }}
{% endfor %}</p>

Answer 1

不要使用单独的帐单地址查询，而是从订单实例中获取它:

def orders(request):
    orders = Order.objects.filter(user=request.user.id, ordered=True)

    context = {
        'orders': orders,
    }
    return render(request, 'orders.html', context)

订单.html:

{% for order in orders %}
    {{ order.billing_address.street_address }}
    {{ order.billing_address.country }}
    ...
{% endfor %}