Django REST Framework (DRF) Serializers & Function-Based API Views | Beginner to Intermediate Guide
In this in-depth tutorial, we will explore one of the most important concepts in Django REST Framework (DRF) — Serializers — and learn how to build powerful Function-Based API Views step by step.
If you're learning Django REST Framework and want to understand how data is converted into JSON and how APIs actually send and receive data, this video is exactly for you.
📌 What You Will Learn in This Video
✅ What is Django REST Framework (DRF)?
✅ What are Serializers and why they are important?
✅ How serialization works in REST APIs
✅ How to create a basic Serializer
✅ How to create a ModelSerializer
✅ How to serialize Django models into JSON
✅ How to validate data using serializers
✅ How to create Function-Based API Views
✅ Handling GET, POST, PUT, DELETE methods
✅ Writing clean and professional DRF code
✅ Best practices for DRF serializers and API views
🔎 What is a Serializer in Django REST Framework?
In Django REST Framework, a Serializer converts complex data types like Django model instances into JSON format so they can be rendered into API responses. It also handles deserialization — converting incoming JSON data back into Python objects.
Serializers are the backbone of any REST API built using Django. Without serializers, you cannot properly structure or validate API data.
In this tutorial, we clearly explain:
The difference between Serializer and ModelSerializer
How .is_valid() works
How .save() works
Field-level validation
Overriding create() and update() methods
🧩 Function-Based API Views in DRF
After understanding serializers, we move to Function-Based Views (FBV) in DRF.
You will learn how to:
Use @api_view() decorator
Handle multiple HTTP methods (GET, POST, PUT, DELETE)
Return proper Response objects
Handle errors and status codes correctly
Connect serializers with API views
We will build a fully working CRUD API using function-based views so you understand how everything connects.
💡 Best Practices Covered
✔ Keep serializers clean and reusable
✔ Use ModelSerializer when possible
✔ Validate data properly
✔ Return correct HTTP status codes
✔ Structure your API professionally
✔ Follow REST standards
These best practices will help you write scalable and production-ready APIs.
🎯 Who Should Watch This?
Django beginners
Backend developers
Students learning REST APIs
Anyone preparing for Python backend interviews
Developers building real-world API projects
If you want to master Django REST Framework step by step, this video is a must-watch.
📚 Why This Topic is Important?
Every modern web or mobile application needs APIs. DRF is one of the most powerful tools to build REST APIs in Python.
Understanding serializers and function-based views gives you a strong foundation before moving to class-based views, viewsets, routers, authentication, and permissions.
This is a core concept for becoming a professional Django backend developer.
Django REST Framework
DRF Serializers
Function Based API View
Django API tutorial
DRF beginner tutorial
How to use serializers in Django REST Framework
How to create function based API view in DRF
Django REST Framework CRUD API tutorial
ModelSerializer vs Serializer in DRF
DRF API development step by step
Django REST Framework for beginners
If you found this tutorial helpful, make sure to:
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More advanced topics like Class-Based Views, ViewSets, Routers, Authentication, Permissions, JWT, and Deployment are coming soon!
Source Code:
https://github.com/mdmosnabi/Django_r...
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