models.py
class IP(models.Model):
name = models.CharField(max_length=30, unique=True)
address = models.CharField(max_length=50, unique=True)
class IPGroup(models.Model):
name = models.CharField(max_length=50, unique=True)
ips = models.ManyToManyField('IP', through='IPGroupToIP')
class IPGroupToIP(models.Model):
ip_group = models.ForeignKey('IPGroup', on_delete=models.CASCADE)
ip = models.ForeignKey('IP', on_delete=models.CASCADE)
serializers.py
class IPGroupCreateSerializer(serializers.ModelSerializer):
ips = serializers.ListField()
class Meta:
model = IPGroup
fields = ['name', 'ips']
@transaction.atomic()
def create(self, validated_data):
ips_data = validated_data.pop('ips', None)
ip_group = IPGroup.objects.create(name=validated_data['name'])
if ips_data:
for ip in ips_data:
ip_obj, created = IP.objects.get_or_create(name=ip['name'],
address=ip['address'])
IPGroupToIP.objects.create(ip_group_id=ip_group.id, ip_id=ip_obj.id)
return ip_group
views.py
class IPGroupCreateView(generics.CreateAPIView):
queryset = IPGroup.objects.get_queryset()
serializer_class = IPGroupCreateSerializer
JSON payload
{ "ips": [{"name":"example.com", "address":"10.1.1.9"}], "name": "ipgroup1" }
Expected behavior
{"name": "ipgroup1", "ips": [{"name": "example.com", "address": "10.1.1.9"}]}
Actual behavior
*TypeError at /api/v1/ip-group/'ManyRelatedManager' object is not iterable*
This strangely works if i set write_only=True to the ListField but then the
**ips** fiels is not available in the serializer response data. I went
through the documentation and did not see this behavior mentioned anywhere.
What am I doing wrong ?
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