Building a Live Chat Feature
Apply realtime knowledge to create a practical live chat application, demonstrating instant message delivery.
Realtime Chat: The Foundation
Welcome to building a live chat! Instant messaging is a perfect example of where realtime capabilities shine.
Users expect their messages to appear instantly without refreshing. Supabase Realtime makes this surprisingly simple.
In this lesson, we'll connect the dots: sending messages to your database and instantly receiving new messages from others.
Designing Your Chat Messages Table
First, we need a place to store our chat messages. A simple table is all it takes!
We'll create a messages table with columns for the message text, who sent it, and when it was sent.
id: Primary Key, unique identifier.text: The message content (type:TEXT).user_id: Who sent the message (type:UUID, linked toauth.users).created_at: When the message was sent (type:TIMESTAMPTZ, default tonow()).
All lessons in this course
- Understanding Realtime Subscriptions
- Subscribing to Table Changes
- Building a Live Chat Feature
- Presence and Broadcast Channels