我正在使用Django 2.0，Python 3.7和django-address模块-https://github.com/furious-luke/django-address。简而言之，Address对象取决于Locality对象（城市），并且我已经创建了自己的模型，该模型取决于Address对象...
class Coop(models.Model):
name = models.CharField(max_length=250, null=False)
type = models.ForeignKey(CoopType, on_delete=None)
address = AddressField(on_delete=models.CASCADE)
enabled = models.BooleanField(default=True, null=False)
phone = PhoneNumberField(null=True)
email = models.EmailField(null=True)
web_site = models.TextField()
然后，我创建了以下序列化程序来处理处理要上传的JSON，以创建我的模型及其地址对象...
class AddressTypeField(serializers.PrimaryKeyRelatedField):
queryset = Address.objects
def to_internal_value(self, data):
if type(data) == dict:
locality = data['locality']
locality, created = Locality.objects.get_or_create(**locality)
data['locality'] = locality
address, created = Address.objects.create(**data)
# Replace the dict with the ID of the newly obtained object
data = address.pk
return super().to_internal_value(data)
...
class CoopSerializer(serializers.ModelSerializer):
type = CoopTypeField()
address = AddressTypeField()
class Meta:
model = Coop
fields = ['id', 'name', 'type', 'address', 'enabled', 'phone', 'email', 'web_site']
def to_representation(self, instance):
rep = super().to_representation(instance)
rep['type'] = CoopTypeSerializer(instance.type).data
rep['address'] = AddressSerializer(instance.address).data
return rep
def create(self, validated_data):
"""
Create and return a new `Snippet` instance, given the validated data.
"""
return Coop.objects.create(**validated_data)
def update(self, instance, validated_data):
"""
Update and return an existing `Coop` instance, given the validated data.
"""
instance.name = validated_data.get('name', instance.name)
instance.type = validated_data.get('type', instance.type)
instance.address = validated_data.get('address', instance.address)
instance.enabled = validated_data.get('enabled', instance.enabled)
instance.phone = validated_data.get('phone', instance.phone)
instance.email = validated_data.get('email', instance.email)
instance.web_site = validated_data.get('web_site', instance.web_site)
instance.save()
return instance
但是，当我将以下JSON发布到我的端点时...
{
"name": "1872",
"type": {
"name": "Coworking Space"
},
"address": {
"street_number": "222",
"route": "1212",
"raw": "222 W. Merchandise Mart Plaza, Suite 1212",
"formatted": "222 W. Merchandise Mart Plaza, Suite 1212",
"latitude": 41.88802611,
"longitude": -87.63612199,
"locality": {
"name": "Chicago",
"postal_code": "60654",
"state": 1
}
},
"enabled": true,
"phone": null,
"email": null,
"web_site": "http://www.1871.com/"
}
我收到以下错误...
web_1 | Internal Server Error: /coops/
web_1 | Traceback (most recent call last):
web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/handlers/exception.py", line 35, in inner
web_1 | response = get_response(request)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/handlers/base.py", line 128, in _get_response
web_1 | response = self.process_exception_by_middleware(e, request)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/handlers/base.py", line 126, in _get_response
web_1 | response = wrapped_callback(request, *callback_args, **callback_kwargs)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
web_1 | return view_func(*args, **kwargs)
web_1 | File "/usr/local/lib/python3.7/site-packages/django/views/generic/base.py", line 69, in view
web_1 | return self.dispatch(request, *args, **kwargs)
web_1 | File "/usr/local/lib/python3.7/site-packages/rest_framework/views.py", line 505, in dispatch
web_1 | response = self.handle_exception(exc)
web_1 | File "/usr/local/lib/python3.7/site-packages/rest_framework/views.py", line 465, in handle_exception
web_1 | self.raise_uncaught_exception(exc)
web_1 | File "/usr/local/lib/python3.7/site-packages/rest_framework/views.py", line 476, in raise_uncaught_exception
web_1 | raise exc
web_1 | File "/usr/local/lib/python3.7/site-packages/rest_framework/views.py", line 502, in dispatch
web_1 | response = handler(request, *args, **kwargs)
web_1 | File "/app/maps/views.py", line 20, in post
web_1 | if serializer.is_valid():
web_1 | File "/usr/local/lib/python3.7/site-packages/rest_framework/serializers.py", line 234, in is_valid
web_1 | self._validated_data = self.run_validation(self.initial_data)
web_1 | File "/usr/local/lib/python3.7/site-packages/rest_framework/serializers.py", line 433, in run_validation
web_1 | value = self.to_internal_value(data)
web_1 | File "/usr/local/lib/python3.7/site-packages/rest_framework/serializers.py", line 490, in to_internal_value
web_1 | validated_value = field.run_validation(primitive_value)
web_1 | File "/usr/local/lib/python3.7/site-packages/rest_framework/relations.py", line 153, in run_validation
web_1 | return super().run_validation(data)
web_1 | File "/usr/local/lib/python3.7/site-packages/rest_framework/fields.py", line 565, in run_validation
web_1 | value = self.to_internal_value(data)
web_1 | File "/app/maps/serializers.py", line 27, in to_internal_value
web_1 | address, created = Address.objects.create(**data)
web_1 | TypeError: cannot unpack non-iterable Address object
如何在序列化程序中正确设置我的地址位置字段，以避免发生此错误？
错误'cannot unpack non-iterable Address object'来自以下事实：create仅返回地址对象，而不返回元组（创建的地址）。这是文档：https://docs.djangoproject.com/fr/2.2/ref/models/querysets/#django.db.models.query.QuerySet.create