Скачать или смотреть Flask REST API with JWT Authentication, PostgreSQL & Swagger UI | Full Python Tutorial 2025

🚀 In this video, you’ll learn how to build a complete REST API using Python Flask,
with PostgreSQL as the database, JWT Authentication for secure login,
and Swagger UI for beautiful, interactive API documentation.

By the end of this tutorial, you’ll have a production-ready backend where you can:
• Register and log in users 🔐
• Generate and verify JWT tokens 🪪
• Protect routes using decorators
• Perform full CRUD operations on products
• Test every API visually from Swagger UI — no Postman needed ⚡

💡 What You’ll Learn
• Flask project setup and folder structure
• PostgreSQL database connection
• User registration and secure password hashing
• JWT token creation and expiry handling
• Token-based route protection
• Product CRUD endpoints
• Adding Swagger documentation for every route
• Testing APIs in Swagger UI

🧩 Tech Stack
• Python 3 / Flask
• PostgreSQL
• JWT (PyJWT)
• Flasgger (Swagger UI)
• psycopg2 (PostgreSQL driver)
• Flask-CORS

🧱 Project Structure
flask_api/
├── app.py
├── config.py
├── db_setup.sql
├── requirements.txt
└── routes/
├── auth_routes.py
└── product_routes.py
🧰 Commands to Run

pip install -r requirements.txt
python app.py


📚 Access Swagger UI
Visit: http://127.0.0.1:5000/apidocs

🎯 Endpoints
• POST /api/auth/register — Create new user
• POST /api/auth/login — Get JWT token
• GET /api/product/ — Get all products
• POST /api/product/ — Create new product
• PUT /api/product/{id} — Update product
• DELETE /api/product/{id} — Delete product

🔒 Authentication
Copy your JWT token from the login response and paste it in Swagger’s Authorization field as:
Bearer YOUR_TOKEN_HERE



👍 Don’t forget to Like, Subscribe, and Comment below
which feature you want next — refresh tokens, role-based access, or JWT cookie authentication!

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