需要使用django为嵌套的序列化程序执行POST方法

Question

型号.py

class Organisation(models.Model):
"""
Organisation model
"""
org_id = models.AutoField(unique=True, primary_key=True)
org_name = models.CharField(max_length=100)
org_code = models.CharField(max_length=20)
org_mail_id = models.EmailField(max_length=100)
org_phone_number = models.CharField(max_length=20)
org_address = models.JSONField(max_length=500, null=True)
product = models.ManyToManyField(Product, related_name='products')
org_logo = models.ImageField(upload_to=upload_org_logo, null=True, blank=True,)
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)

序列化程序.py

class Organisation_Serializers(serializers.ModelSerializer):
product = Product_Serializers(read_only=True, many=True)
class Meta:
model = Organisation
fields = ('org_id', 'org_name','org_address', 'org_phone_number', 'org_mail_id','org_logo','org_code','product',)
#depth = 1
def create(self, validated_data):
org_datas = validated_data.pop('product')
org = Organisation.objects.create(**validated_data)
for org_data in org_datas:
Product.objects.create(org=org, **org_data)
return org

视图.py

class Organisation_Viewset(DestroyWithPayloadMixin,viewsets.ModelViewSet):
renderer_classes = (CustomRenderer, )  #ModelViewSet Provides the list, create, retrieve, update, destroy actions.
queryset=models.Organisation.objects.all()
parser_classes = [parsers.MultiPartParser, parsers.FormParser]
http_method_names = ['get', 'post', 'patch', 'delete']
serializer_class=serializers.Organisation_Serializers

在执行get方法时，我能够将产品数据作为dict的数组获取，但当我尝试POST时，我得到了一个错误Key Error product。我需要像现在这样获取数据，如果我POST基于product_id的数组或我在get方法中接收的数据数组，那就可以了。我在这个问题上被困了3天，仍然无法解决。请帮助我解决这个问题，非常感谢您的帮助。

Answer 1

class Organisation_Serializers(serializers.ModelSerializer):
product = Product_Serializers(many=True) # Remove read_only=True from here.
class Meta:
model = Organisation
fields = '__all__'
extra_kwargs = {
"created_at": {"read_only": True},
"updated_at": {"read_only": True},
}
def create(self, validated_data):
# get the 'product' values from the payload.
products = validated_data.pop('product')
# Add (all) the value from payload to the Organisation model.
organisation_instance = Organisation.objects.create(**validated_data)
# Loop the values that were passed inside of products field from payload.
for product in products:
# Add normally the fields of "this payload" to the Product model.
product_instance = Product.objects.create(**product)

# Get the product_instance and passes all its payload.id.
# adding them to organisation_instance as it should be.
# like this the nested fields will be passed to the --
# Organisation endpoint.
# Organisation --> product field --> [product instances..]
organisation_instance.product.add(product_instance.id)
# save the modifications -
# with the nested values.
organisation_instance.save()
return organisation_instance