我是 Django 新手,我正在尝试将 Unit 和 current_user 外键保存在基于数据库的 pk 中,但每次我尝试这样做但遇到两种类型的错误serializers.is_valid()
都会引发异常错误或序列化程序返回"Invalid data. Expected a dictionary, but got Unit."
我已经尝试了一种非常非常丑陋的方式来绕过序列化程序,但我得到 ee8452a4-2a82-4804-a010-cf2f5a41e006 必须是 SavedUnit.unit 的一个实例。我也尝试过直接使用保存外键 SavedUnit.objects.create()
但没有运气
模型.py
class SavedUnit(models.Model):
"""
Saving units for later models
relationship with units and users
"""
id = models.UUIDField(primary_key=True, default=hex_uuid, editable=False)
unit = models.ForeignKey(Unit, on_delete=models.CASCADE)
user = models.ForeignKey('accounts.User', on_delete=models.CASCADE, related_name='user')
published_at = models.DateTimeField(auto_now_add=True)
序列化程序.py
class SavedSerializer(serializers.ModelSerializer):
unit = UnitSerializer()
class Meta:
model = SavedUnit
fields = [
'id',
'unit'
]
视图.py
class SavedUnitView(APIView):
"""
Query all the unites saved
"""
@staticmethod
def get_unit(request, pk):
try:
return Unit.objects.get(pk=pk)
except Unit.DoesNotExist:
return Response(status=status.HTTP_400_BAD_REQUEST)
@staticmethod
def post(request, pk):
if request.user.is_authenticated:
unit = get_object_or_404(Unit, id=pk)
serializers = SavedSerializer(data=unit)
if serializers.is_valid(raise_exception=True):
created = SavedUnit.objects.get_or_create(
user=request.user,
unit=unit)
return Response(status=status.HTTP_201_CREATED)
return Response(status=status.HTTP_401_UNAUTHORIZED)
def get(self, request):
units = SavedUnit.objects.filter(user=self.request.user.id)
try:
serializers = SavedSerializer(units, many=True)
return Response(serializers.data, status=status.HTTP_200_OK)
except Unit.DoesNotExist:
return Response(status=status.HTTP_500_INTERNAL_SERVER_ERROR)