What are some examples of nested serializers in Django REST framework?

What are some examples of nested serializers in Django REST framework?

Nested serializers allow you to represent relationships between models in Django REST framework. For example, if you have a Book model that has a foreign key to an Author model, you can create a nested serializer for the Author within the Book serializer.

Can you show me a code example of that?

Sure! Here's a simple example:

class AuthorSerializer(serializers.ModelSerializer):
    class Meta:
        model = Author
        fields = ['id', 'name']

class BookSerializer(serializers.ModelSerializer):
    author = AuthorSerializer()  # Nested serializer

    class Meta:
        model = Book
        fields = ['id', 'title', 'author']

How do I handle creating or updating nested serializers?

To handle creating or updating nested serializers, you can override the create and update methods in your parent serializer. You'll need to manually handle the nested data.

Can you provide an example of that as well?

Absolutely! Here's an example of how to override the create method:

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