How do I use serializers with Django ORM?

How do I use serializers with Django ORM?

To use serializers with Django ORM, you typically create a serializer class that inherits from serializers.ModelSerializer. This allows you to easily convert model instances to JSON and vice versa.

Can you show me a simple example of a serializer?

Sure! Here's a basic example:

from rest_framework import serializers
from .models import MyModel

class MyModelSerializer(serializers.ModelSerializer):
    class Meta:
        model = MyModel
        fields = '__all__'

How do I validate data using serializers?

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

def validate_field_name(self, value):
    if value < 0:
        raise serializers.ValidationError('Value must be positive.')
    return value

What about nested serializers?

Nested serializers can be used by including another serializer as a field in your main serializer. For example:

class ParentSerializer(serializers.ModelSerializer):
    children = ChildSerializer(many=True)
    class Meta:
        model = ParentModel
        fields = '__all__'