Django RF - nested serializers with ModelViewSet - django

Question

I have a problem with nested serializers.
In Shell everything works, but when I make an HTTP request i'ts always an error like "field required".
Models:
class Product(models.Model):
index = models.CharField(max_length=12, unique=True, db_index=True)
quantity = models.PositiveIntegerField(default=0)
def __str__(self):
return self.index
class Name(models.Model):
product = models.ForeignKey(Product, related_name='names', on_delete=models.CASCADE, null=True)
language = models.CharField(max_length=50, default="name_pl")
title = models.CharField(max_length=300, blank=True, null=True)
def __str__(self):
return self.language
Serializers:
class ProductSerializer(serializers.ModelSerializer):
names = NameSerializer(many=True)
class Meta:
model = Product
fields = ["index", "quantity", "names"]
def create(self, validated_data):
names = validated_data.pop('names')
product = Product.objects.create(**validated_data)
for name in names:
Name.objects.create(product=product, **name)
return product
views:
class NameView(viewsets.ModelViewSet):
queryset = Name.objects.all()
serializer_class = NameSerializer
filter_backends = [DjangoFilterBackend, filters.SearchFilter]
filterset_fields = ('id',)
search_fields = ['id']
class ProductView(viewsets.ModelViewSet):
queryset = Product.objects.all()
serializer_class = ProductSerializer
filter_backends = [DjangoFilterBackend, filters.SearchFilter]
filterset_fields = ('id',)
search_fields = ['id']
permission_classes = (CustomDjangoModelPermissions,)
I'm trying to POST data:
data = {
"index": "11111",
"quantity": 1213,
"names": [
{"language": "DE","title": "GER"},
{"language": "CZ","title": "CZZ"}
]
}
RESPOND:
names field required
I've tried to override create in view, to "look" whats wrong:
def create(self, request):
data = request.data
serializer = ProductSerializer(data=data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=201)
return Response(request.data, status=400)
Then I get:
{'index': '11111', 'quantity': '1213', 'names': 'title'}
So it can't send all of data, so it can't validate.
Need help, pls ;)

Answer 1

Problem solved:
Just forget to add in request:
data = json.dumps(data)