ValueError - 视图没有返回 HttpResponse 对象。它返回 None 而不是

Question

我的视图当前返回错误

视图 viajecenter.views.receive_payment 没有返回 HttpResponse 对象。它返回 None 。

我在这里尝试了其他相关帖子中的一些解决方案，但没有成功。

这是我的 views.py 文件中的函数：

def receive_payment(request, account_code):
template_name = 'receive-payment.html'

user = request.user

account = get_object_or_404(Account, account_code=account_code)
if user.is_assigned:
    puv = Puv.objects.get(assignment_id=user.assignment_id)
    locations = puv.route.locations.all().order_by('distance_from_base')

    context = {
        'account': account,
        'puv': puv,
        'locations': locations,
    }
    return render(request, template_name, context)

else:
    return user

以及urls.py文件中对应的url：

from django.urls import path
from . views import ..., receive_payment


urlpatterns = [
    ...
    path('receive-payment/<str:account_code>', receive_payment, name="receive-payment"),
]

和我的帐户模型：

class Account(AbstractBaseUser, PermissionsMixin):
    ...
    account_code = models.UUIDField(default=uuid.uuid4, editable=False)
    is_assigned = models.BooleanField(default=False)

感谢您抽出时间回答我的问题 :)

Answer 1

您似乎正在尝试混合和匹配基于函数的视图和基于类的视图。

您可以将视图重写为DetailView class-based view，如下所示：

from django.views.generic import DetailView


class ReceivePaymentView(DetailView):
    template_name = "receive-payment.html"
    model = Account
    slug_url_kwarg = "account_code"
    slug_field = "account_code"

    def get_context_data(self, *args, **kwargs):
        context = super().get_context_data(*args, **kwargs)
        account = context["object"]
        user = self.request.user
        if user.is_assigned:
            puv = Puv.objects.get(assignment_id=user.assignment_id)
            locations = puv.route.locations.all().order_by("distance_from_base")
            context["account"] = account
            context["puv"] = puv
            context["locations"] = locations
        return context

urlpatterns = [
    path('receive-payment/<account_code>', ReceivePaymentView.as_view(), name="receive-payment"),
]