python-backend
/

Django REST Framework (DRF) – Building Professional APIs

Last Sync: Today

On this page

5
0%
5 min read
Remaining
5 minleft

Click any section to jump — progress syncs automatically

python-backend

Django REST Framework (DRF) – Building Professional APIs

What is Django REST Framework?

Django REST Framework (DRF) is a powerful and flexible toolkit for building Web APIs. While standard Django is built around rendering HTML templates, DRF is designed to return machine-readable data (usually JSON). It is the most popular choice for powering single-page applications (React/Vue) and mobile backends (Flutter/iOS/Android).

  1. The Serializer: Data Translation

Serializers allow complex data, such as querysets and model instances, to be converted to native Python datatypes that can then be easily rendered into JSON. They also provide deserialization, allowing parsed data to be converted back into complex types after first validating the incoming data.

PythonRead-only
1
from rest_framework import serializers
from .models import Project

class ProjectSerializer(serializers.ModelSerializer):
    class Meta:
        model = Project
        fields = ['id', 'title', 'description', 'stars', 'is_active']

  1. API Views & ViewSets

DRF provides several ways to write views. APIView gives you total control (similar to Django's View), while ViewSets allow you to define the logic for a set of related views in a single class, automatically handling standard operations like list, create, retrieve, update, and destroy.

PythonRead-only
1
from rest_framework import viewsets
from .models import Project
from .serializers import ProjectSerializer

class ProjectViewSet(viewsets.ModelViewSet):
    queryset = Project.objects.all()
    serializer_class = ProjectSerializer

DRF Architecture Flow

When a request arrives, DRF handles authentication, permissions, and throttling before passing the data to the ViewSet and Serializer.

  1. Authentication & Permissions

DRF comes with built-in support for various authentication schemes (Session, Basic, Token, JWT) and a robust permission system to determine who can access or modify data.

ComponentPurposeExample
SerializersObject to JSON / JSON to ObjectModelSerializer
PermissionsDecide access rightsIsAuthenticated, IsAdminUser
AuthenticationIdentify the userJWTAuthentication, TokenAuthentication
ParsersHandle incoming data formatsJSONParser, FormParser
RenderersFormat outgoing dataJSONRenderer, BrowsableAPIRenderer

Test Your Knowledge

Q1
of 3

Which component in DRF is responsible for converting a Database Model into JSON?

A
Renderer
B
Parser
C
Serializer
D
Router
Q2
of 3

Which class would you inherit from to automatically get list, create, and delete functionality?

A
APIView
B
ModelViewSet
C
GenericAPIView
D
TemplateView
Q3
of 3

What is the primary benefit of using a Router in DRF?

A
It makes the API run faster
B
It automatically generates URL configurations for your ViewSets
C
It encrypts the outgoing data
D
It connects the API to the database

Frequently Asked Questions

What is the Browsable API?

One of DRF's best features is the Browsable API. It automatically generates a web-based UI for your API, allowing developers to interact with endpoints, send POST requests, and view documentation directly in the browser.

Should I use APIView or ViewSets?

Use APIView when you need custom logic or non-standard behavior. Use ViewSets (and Routers) for standard CRUD logic to keep your code DRY (Don't Repeat Yourself) and consistent.

Does DRF support JWT?

Yes, although not natively in the core. It is standard practice to use third-party libraries like 'djangorestframework-simplejwt' to implement robust JWT authentication.

Previous

django templates

Next

python database intro

Related Content

Need help?

Explore our comprehensive docs or start a chat with our tech experts.