无法使用 Django Rest Framework 保存两个对象之间的关系

Question

I am building a Django/React App to allow users to submit orders that need to go from A to B. The user initially saves the addresses in the database and then he/she selects it in the order form. When they submit I attempt to create a relationship in the database, I'm using Django Rest Framework serializers to create the Order object in the database.

Unfortunately, I'm unable to successfully save the items as I'm not properly linking the addresses to the order. Im getting the following error:

destinationAddress: ["Invalid value."]
originAddress: ["Invalid value."]

Models

class Order(models.Model):
    originAddress = models.ForeignKey(Address, related_name="originAddress",  null=True, on_delete=models.CASCADE)
    destinationAddress = models.ForeignKey(Address, related_name="destinationAddress",   null=True, on_delete=models.CASCADE)
    packages = models.CharField("Packages", max_length=1024)

class Address(models.Model):
    address_code = models.CharField(max_length=250)
    contact = models.CharField("Contact", max_length=1024)
    phone = models.CharField("Phone", max_length=20)
    company = models.CharField("Company", max_length=250)
    addressLine1 = models.CharField("Address line 1", max_length=1024)
    addressLine2 = models.CharField("Address line 2", max_length=1024, blank=True)
    postalCode = models.CharField("Postal Code", max_length=12)
    city = models.CharField("City", max_length=1024)
    state = models.CharField("State", max_length=250)

Serializers

class AddressSerializer(serializers.ModelSerializer):

    class Meta:
        model = Address
        fields = '__all__'


class OrderSerializer(serializers.ModelSerializer):
    originAddress = serializers.SlugRelatedField(
        queryset=Address.objects.all(),
        slug_field='pk'
    )
    destinationAddress = serializers.SlugRelatedField(
        queryset=Address.objects.all(),
        slug_field='pk'
    )


    class Meta:
        model = Order
        fields = ('id', 'packages', 'destinationAddress', 'originAddress')

ViewSets

class OrderViewSet(viewsets.ModelViewSet):
    queryset = Order.objects.all()

    permission_classes = [
        permissions.AllowAny
    ]

    serializer_class = OrderSerializer

class AddressViewSet(viewsets.ModelViewSet):
    queryset = Address.objects.all()

    permission_classes = [
        permissions.AllowAny
    ]

    serializer_class = AddressSerializer

Any ideas? Thanks

Answer 1

Solved it by replacing SlugRelatedField to PrimaryKeyRelatedField

class OrderSerializer(serializers.ModelSerializer):

    originAddress = serializers.PrimaryKeyRelatedField(
        queryset=Address.objects.all(), allow_null=True, required=False
    )
    destinationAddress = serializers.PrimaryKeyRelatedField(
        queryset=Address.objects.all(), allow_null=True, required=False
    )

    class Meta:
        model = Order
        fields = ('id', 'packages', 'destinationAddress', 'originAddress')