Django Rest Framework - 'Field required' scenarios when using serializers with nested relations
I'm trying to debug I'm not sure how to approach I'm trying to configure I'm working with Django Rest Framework (DRF) version 3.13.1 and trying to serialize a model that has a nested relation to another model. My main model, `Book`, has a foreign key to another model, `Author`. When I try to create a new `Book` instance through the API, I receive a `{'author': ['This field is required.']}` behavior, even though I am including the author field in my request payload. Here’s the structure of my models: ```python class Author(models.Model): name = models.CharField(max_length=100) email = models.EmailField() class Book(models.Model): title = models.CharField(max_length=200) author = models.ForeignKey(Author, on_delete=models.CASCADE) ``` And here’s my serializer for the `Book` model: ```python from rest_framework import serializers class AuthorSerializer(serializers.ModelSerializer): class Meta: model = Author fields = ['id', 'name', 'email'] class BookSerializer(serializers.ModelSerializer): author = AuthorSerializer() class Meta: model = Book fields = ['id', 'title', 'author'] ``` When I send the following JSON payload to create a new book: ```json { "title": "New Book Title", "author": { "name": "John Doe", "email": "john@example.com" } } ``` I get the behavior mentioned above. I thought the nested serializer would handle the author creation automatically. What am I missing? I've tried overriding the `create` method in `BookSerializer` to handle the nested author, but that hasn’t solved the scenario either. Here’s what I tried: ```python class BookSerializer(serializers.ModelSerializer): author = AuthorSerializer() class Meta: model = Book fields = ['id', 'title', 'author'] def create(self, validated_data): author_data = validated_data.pop('author') author = Author.objects.create(**author_data) book = Book.objects.create(author=author, **validated_data) return book ``` However, I still face the same `Field required` behavior. Can someone guide to understand why this is happening and how to properly handle nested serializers in DRF? This is part of a larger web app I'm building. Thanks in advance! This is part of a larger application I'm building. I'm working in a CentOS environment. Could someone point me to the right documentation? I recently upgraded to Python 3.10. Any help would be greatly appreciated!