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Leveraging Supabase Social Login in Your Next.js Web App: A Developer Guide

People love convenience, and this fact holds when they're exploring your web app. One thing that defines this convenience is offering a seamless, straightforward login mechanism. Today, using social logins has become increasingly popular in the web development landscape. And why not? It not only improves the user experience by reducing the entry barrier but also saves you the effort of managing their credentials.

In this post, we will guide you on how to implement this sought-after functionality using Supabase and Next.js. Let's get started!

A Brief Overview of Supabase and Next.js

Before we delve into the technicalities, let's build a foundation by understanding what Supabase and Next.js are and why they make a potent combination for your web app:

  • Supabase: Self-proclaimed as the open-source Firebase alternative, Supabase is an incredibly powerful tool for modern web development. It provides an abundance of ready-made yet customizable features, just like authentication, database management, storage, and real-time subscriptions, among others.

  • Next.js: A React framework for building JavaScript applications. It's an excellent choice for application rendering- server-side, static generation, or client-side. Besides, it comes with features like automatic routing, API endpoints, and code-splitting.

Combining these two makes sense. Supabase brings extensive back-end capabilities, and Next.js provides a robust platform for creating a scalable front-end.

Getting Started

To begin, you need to have Node.js and npm installed on your system, along with a code editor. If you have these ready, let's get started.

npx create-next-app@latest

The above command will create your new Next.js app. Now, navigate to your project directory.

cd your_project_name

Setting up Supabase

Setting up Supabase for your project is straightforward. Just visit Supabase.io and sign up for a new account if you do not have one. Then, create a new project, and Supabase will automatically provision a new PostgreSQL database for you.

Once your dashboard is ready, navigate to "Settings," then to the "API" section. Here, you will find the URLs and keys you will need for your Next.js app.

Installing Supabase in Your Next.js App

In your Next.js project directory, install the Supabase-js library, which offers a friendly interface to interact with your Supabase backend.

npm install @supabase/supabase-js

Creating an Environment File

Next, create an environment file in the root directory of your project to keep your Supabase URL and public anonymous key.

touch .env.local

Then add your Supabase URL and public anonymous key to this file. Remember to replace your_supabase_url and your_supabase_key with your actual values.

NEXT_PUBLIC_SUPABASE_URL=your_supabase_url
NEXT_PUBLIC_SUPABASE_ANON_KEY=your_supabase_key

Setting Up Supabase Auth in Your Next.js App

With the Supabase client initiated, it's time to set up the login functionality. Supabase provides a built-in Auth component, which you can use directly for handling authentication.

Firstly, navigate to your Supabase project dashboard, click on the 'Authentication' tab in the sidebar, move to 'Settings', and enable the desired social logins.

Now, add the following code inside your React component to set up social login with Supabase:

import { Auth } from '@supabase/ui'
import { supabase } from './api/supabaseClient'

export default function AuthComponent() {
  return (
    <div>
      <Auth.UserContextProvider supabaseClient={supabase}>
        <Auth supabaseClient={supabase} providers={['google', 'facebook', 'github']} />
      </Auth.UserContextProvider>
    </div>
  )
}

Here, providers is an array of social login providers that the Auth component will show in your app. The array can include facebook, google, github, gitlab, or bitbucket.

And voila! With just a few steps, you have efficiently implemented social login functionality in your Next.js web app using Supabase.

Conclusion

By leveraging Supabase's authentication service and Next.js's robust front-end capabilities, you can quickly build a secure and user-friendly web app. While this guide teaches you to handle social login implementation, you can explore more about these powerful technologies to understand their full potential in your web development journey. Happy coding!