How do I use serializers in Django?

How do I use serializers in Django?

In Django, serializers are used to convert complex data types, like querysets, into native Python data types. You can use Django REST Framework's serializers to easily handle this.

Can you show me a simple example of a serializer?

Sure! Here's a basic example:

from rest_framework import serializers

class UserSerializer(serializers.Serializer):
    id = serializers.IntegerField()
    username = serializers.CharField(max_length=100)
    email = serializers.EmailField()

How do I validate data using serializers?

You can add validation methods in your serializer class. For example:

def validate_email(self, value):
    if '@' not in value:
        raise serializers.ValidationError('Invalid email address')
    return value

What about nested serializers?

Nested serializers allow you to serialize related models. You can define a serializer for the related model and use it in the parent serializer.