Supabase is often used as the backend for React and Next.js applications. If your frontend is deployed on Vercel, connecting it to Supabase mainly involves configuring the correct environment variables.
Prepare Your Supabase Project
Make sure your database, authentication, and required tables are ready.
Find Your Project Credentials
Open the Supabase project settings and identify the project URL and public client key.
Add Environment Variables
Open your Vercel project's environment variable settings. Add the values required by your application.
Deploy Again
After adding or changing environment variables, redeploy the application so the production build receives the updated configuration.
Test Authentication
Open the production URL and test: Signup Login Logout Protected pages
Test Database Access
Verify that your application can read and write the expected records. If database requests fail, check your RLS policies as well as your environment variables.
Keep the Backend Separate
Your frontend can remain on Vercel while Supabase handles the backend services. If you later decide to move the application itself to another hosting provider, the frontend can continue using the same Supabase project by changing only the deployment environment.