React + Django Full Stack E-Commerce Project #7 | Cart Functionality (FE+BE)

In this video (Part 7 of the Full Stack E-Commerce Project), we’ll integrate both Frontend and Backend to implement Cart Quantity Update (+ / −) functionality.

You’ll learn how to extend your Django REST API to handle quantity updates and connect it with your React frontend using fetch() and the Context API.

We’ll also build the frontend UI buttons to increase or decrease product quantities dynamically — fully synced with your Django backend.

By the end of this video, your cart system will be fully functional across frontend and backend.

📘 What You’ll Learn

-- Extend Django API to update cart item quantity (+ / −)

-- Create PUT/PATCH route in Django REST Framework

-- Frontend integration using React’s fetch() or axios

-- Update cart data dynamically in Context API

-- Show real-time cart quantity and total updates

-- Test complete flow with Thunder Client and React UI

⚙️ Tech Stack

Frontend: React.js, React Router DOM, Tailwind CSS

Backend: Django REST Framework

Database: PostgreSQL

Tools: Thunder Client, VS Code

📢 *Resources:*

👉 *Django Documentation* - https://docs.djangoproject.com/en/5.2/

👉 *GitHub Code Link* - https://github.com/mohitdjcet/ecommerce-project-react-django