Django 4.2: implementing Serializer Validation on Nested Serializer Fields
I'm prototyping a solution and I'm having a hard time understanding I'm trying to figure out I'm relatively new to this, so bear with me. This might be a silly question, but I'm working with a puzzling scenario with nested serializers in Django REST Framework while working with Django 4.2. I have a parent model which has a foreign key relationship with a child model, and I'm using nested serializers to handle their serialization. However, when I attempt to create a new parent instance with nested child data, the validation on the nested serializer is not behaving as expected. Instead of validating the nested fields, I'm getting a `{'child': ['This field is required.']}` behavior, despite the child data being included in the request. Here's a simplified version of my models: ```python class Parent(models.Model): name = models.CharField(max_length=100) class Child(models.Model): parent = models.ForeignKey(Parent, related_name='children', on_delete=models.CASCADE) age = models.IntegerField() ``` And my serializers: ```python from rest_framework import serializers class ChildSerializer(serializers.ModelSerializer): class Meta: model = Child fields = ['age'] class ParentSerializer(serializers.ModelSerializer): children = ChildSerializer(many=True) class Meta: model = Parent fields = ['name', 'children'] def create(self, validated_data): children_data = validated_data.pop('children') parent = Parent.objects.create(**validated_data) for child_data in children_data: Child.objects.create(parent=parent, **child_data) return parent ``` When I send a POST request with the following JSON: ```json { "name": "Parent Name", "children": [ {"age": 5}, {"age": 10} ] } ``` I receive the behavior mentioned above. I've double-checked the request payload, and it seems correctly formatted. The `create` method in `ParentSerializer` is intended to handle nested writes, so I'm unsure why the validation fails. I’ve tried overriding the `validate` method in the `ParentSerializer`, but it didn’t resolve the scenario. I have also verified that the child data is being passed correctly by logging the `validated_data` at the start of the `create` method. Any insights on what might be going wrong or how I can approach solving this would be greatly appreciated! I'm working on a web app that needs to handle this. Any ideas what could be causing this? For context: I'm using Python on Linux. For context: I'm using Python on macOS. Any pointers in the right direction? For context: I'm using Python on Debian.