What if building a full-stack web application with a live SQL database wasn’t complicated at all — it was just never explained simply enough? 🤔🤯 In this beginner-friendly hands-on tutorial, we’ll take a basic “Hello World” Flask app and transform it into a LIVE PostgreSQL website that you can actually deploy and share with the world! 🌍🚀 No overwhelming technical words. No scary backend theory. Just clear step-by-step logic that shows you how databases, GUIs, and deployment really work together.
By the end of this video, you’ll have your own social-media-style web app running on a real hosting platform named Sevalla! (for free!!! 😱😱😱)
📚 What You’ll Learn: - How full-stack Flask web apps actually work - Creating and structuring a PostgreSQL database - Importing CSV data into SQL tables - Primary Keys, NOT NULL, VARCHAR made easy - Connecting Python to PostgreSQL using psycopg - Turning static HTML into dynamic database-driven pages - Creating dynamic user routes (/user/username) - Navigation bars with database loops - Environment variables & protecting secrets - Deploying a full website with GitHub integration - Reading deployment logs & fixing real errors
👀 What You’ll Build: 🔹 A social-media-style Flask web app 🔹 A live PostgreSQL database 🔹 Dynamic user profiles pulled from SQL 🔹 A fully deployed public website
🗄️ Example SQL Table Creation: -------------------------------------------- CREATE TABLE user_profiles( username VARCHAR(20) PRIMARY KEY, full_name TEXT NOT NULL, photo_path TEXT, bio TEXT, country TEXT, date_of_birth DATE NOT NULL );
⚙️ Example Database Connection: -------------------------------------------- import psycopg with psycopg.connect(DB_URL) as connection: cursor = connection.cursor() cursor.execute("SELECT * FROM user_profiles;") results = cursor.fetchall()
If you’ve ever felt intimidated by databases or backend development — this video will change that. You’ll see that full-stack isn’t about memorizing syntax… it’s about understanding the flow. 😎
⏰ Timestamps ⏰ 01:03 – Clone Starter Files 01:36 – Flask Project Structure 02:01 – Environment Setup 03:07 – Creating Live PostgreSQL Database on Sevalla 05:30 – SQL Tables & CSV Import 09:32 – Python to PostgreSQL Connection 13:45 – Dynamic Profiles in Flask 17:02 – User Routes & Navigation 18:01 – Environment Variables & Secrets 17:52 – Deploying with Sevalla 21:35 – Fixing Deployment Errors 22:05 – Final Live Website Demo
