Use Supabase with Next.js

Learn how to create a Supabase project, add some sample data, and query from a Next.js app.

Create a Supabase project

Go to database.new and create a new Supabase project.

When your project is up and running, go to the Table Editor, create a new table and insert some data.

Alternatively, you can run the following snippet in your project's SQL Editor. This will create a countries table with some sample data.

SQL_EDITOR


_13-- Create the table
_13create table countries (
_13  id bigint primary key generated always as identity,
_13  name text not null
_13);
_13-- Insert some sample data into the table
_13insert into countries (name)
_13values
_13  ('Canada'),
_13  ('United States'),
_13  ('Mexico');
_13
_13alter table countries enable row level security;

Make the data in your table publicly readable by adding an RLS policy:

SQL_EDITOR


_10create policy "public can read countries"
_10on public.countries
_10for select to anon
_10using (true);

Create a Next.js app

Use the create-next-app command and the with-supabase template, to create a Next.js app pre-configured with:

Terminal


_10npx create-next-app -e with-supabase

Declare Supabase Environment Variables

Rename .env.example to .env.local and populate with your Supabase connection variables:

Project URL

Anon key

.env.local


_10NEXT_PUBLIC_SUPABASE_URL=<SUBSTITUTE_SUPABASE_URL>
_10NEXT_PUBLIC_SUPABASE_ANON_KEY=<SUBSTITUTE_SUPABASE_ANON_KEY>

Query Supabase data from Next.js

Create a new file at app/countries/page.tsx and populate with the following.

This will select all the rows from the countries table in Supabase and render them on the page.

app/countries/page.tsx

utils/supabase/server.ts


_10  import { createClient } from '@/utils/supabase/server';
_10
_10  export default async function Countries() {
_10    const supabase = await createClient();
_10    const { data: countries } = await supabase.from("countries").select();
_10
_10    return <pre>{JSON.stringify(countries, null, 2)}</pre>
_10  }

Start the app

Run the development server, go to http://localhost:3000/countries in a browser and you should see the list of countries.