Django Rest Framework - Serializer error when trying to add model from json with 1 attribute as array - rest

Question

Im trying to create an API with Django RestFramework to save some info of computers.
I have encountered a problem when the json has an attribute that is an array of IPv4 field.
I generated the following code
Model
class Computer(models.Model):
hostname = models.CharField(max_length=32)
os_system = models.CharField(max_length=60)
class ComputerIPAddress(models.Model):
computer = models.ForeignKey(Computer,on_delete=models.CASCADE)
ip_address = models.GenericIPAddressField()
Serializer
class ComputerIPAddressSerializer(serializers.ModelSerializer):
class Meta:
model = ComputerIPAddress
fields = ('__all__')
class ComputerSerializer(serializers.ModelSerializer):
ip_address = ComputerIPAddressSerializer(many=True)
class Meta:
model = Computer
fields = ('__all__')
Viewset
class ComputerViewSet(viewsets.ModelViewSet):
queryset = Computer.objects.all()
serializer_class = ComputerSerializer
class ComputerIPAddressViewSet(viewsets.ModelViewSet):
queryset = ComputerIPAddress.objects.all()
serializer_class = ComputerIPAddressSerializer
The idea is that the IP belongs to the computer (if the computer is deleted, I am not interested in having the IP) and a computer can have several IP assigned to it.
The json that is sent is the following:
{'hostname':'PC-01','os_system':'Windows 10','ip_address':['192.168.1.10','192.168.2.10']}

Answer 1

I would approach this problem by overriding the create method the ComputerSerializer
class ComputerSerializer(serializer.ModelSerializer):
...
def create(self, validated_data):
ip_address = validated_data.pop("ip_address", None)
computer = Computer.objects.create(**validated_data)
if ip_address:
for ip in ip_address:
computer.computeripaddress_set.create(ip)
return computer