Django rest 框架覆盖创建会引发错误

Question

我正在尝试通过覆盖viewset的perform_create()方法将模型的字段设置为经过身份验证的用户，但是我收到错误。

这是我的模型：

class Reservation(models.Model):
booking = models.CharField(max_length=15, primary_key=True)
creator = models.ForeignKey(User, on_delete=models.PROTECT, related_name='user_reservations')
agency = models.ForeignKey('GeneralApp.Agency', on_delete=models.PROTECT, related_name='agency_reservations')
comment = models.TextField(null=True, blank=True)
status = models.ForeignKey(ReservationStatus, on_delete=models.PROTECT, related_name='status_reservations')
arrival_date = models.DateField()
departure_date = models.DateField()
register_date = models.DateField(auto_now_add=True)
confirmation = models.CharField(max_length=15, null=True, blank=True)
is_invoiced = models.BooleanField(default=False)
def __str__(self):
return "[{}]{}".format(self.booking, self.agency)
def clean(self, *args, **kwargs):
if self.arrival_date >= self.departure_date:
raise ValidationError('Departure date must be later than Arrival date.')
elif self.arrival_date <= timezone.datetime.now().date():
raise ValidationError('Arraival date must be later than today.')
def save(self, *args, **kwargs):
self.full_clean()
super(Reservation, self).save(*args, **kwargs)

这是我的序列化程序：

class ReservationSerializer(serializers.HyperlinkedModelSerializer):
creator = serializers.ReadOnlyField(source='creator.username')
class Meta:
model = models.Reservation
fields = ('booking', 'creator', 'agency', 'comment', 'status', 'arrival_date', 'departure_date')

这是我的观点集：

class ReservationViewSet(viewsets.ModelViewSet):
queryset = models.Reservation.objects.all()
serializer_class = serializers.ReservationSerializer
def perform_create(self, serializer):
serializer.save(owner=self.request.user)

这是我得到的错误：

TypeError at /reservations_manager/reservations/
Got a `TypeError` when calling `Reservation.objects.create()`.
This may be because you have a writable field on the serializer class that is not a valid argument to `Reservation.objects.create()`.
You may need to make the field read-only, or override the ReservationSerializer.create() method to handle this correctly.

我试图按照 http://www.django-rest-framework.org/tutorial/4-authentication-and-permissions/#associating-snippets-with-users 中的指示进行操作，但显然，我做错了什么。

Answer 1

这只是一个愚蠢的错误：我将字段的名称从owner更改为creator，但我忘记在perform_create()方法中更改它：

def perform_create(self, serializer):
serializer.save(creator=self.request.user)