Integrate Auth0 with Your Next.js Application
Kshitish Kumar Pothal
Next Js || React js || Frontend Developer || Wix || DSA || 500+ DSA Problem Solved || Java || Python || Kotlin || AWS
Implementing safe login, logout, and user management capabilities for your apps is made simple with Auth0, a robust authentication platform. This tutorial explains how to use the Auth0 Next.js SDK to include Auth0 into your Next.js project.
Why Choose Auth0?
- Fast Integration: Easy-to-use SDKs and comprehensive instructions for a range of technologies.
- Strong Security: Use safe permission and authentication to safeguard your apps.
- Scalability: The ability to be readily modified for both small and large-scale applications.
- Versatility: Accommodates a large number of platforms, languages, and frameworks.
Quickstarts Overview
Auth0 facilitates rapid and effective integration by providing customized guidelines for various technologies. The supported platform categories are listed below:
1. Regular Web Apps
For traditional server-rendered applications:
- Frameworks: Apache, ASP.NET Core, Django, Express, Go, Java, Laravel, Next.js, PHP, Ruby on Rails.
2. Single Page Apps (SPAs)
For client-side JavaScript frameworks:
- Frameworks: Angular, React, Vue, JavaScript, Flutter (Web).
3. Native/Mobile Apps
For mobile or desktop applications running on devices:
- Platforms: Android, iOS/macOS, React Native, Xamarin, Expo, MAUI.
4. Backend/APIs
For securing APIs and backend services:
- Frameworks: ASP.NET Core Web API, Django API, Go API, Spring Boot API, Python API, Node (Express) API, PHP API.
Step-by-Step Integration for Next.js
1. Configure Auth0
- Log in to the Auth0 Dashboard.
- Create a new application and configure the following:
1. Callback URL: https://localhost:3000/api/auth/callback
2. Logout URL: https://localhost:3000
2. Install the SDK
- Install the Auth0 SDK for Next.js:Copy code
npm install @auth0/nextjs-auth0
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3. Configure Environment Variables
- Add a .env.local file in your project root with the following values:
AUTH0_SECRET=<your-secret>
AUTH0_BASE_URL=https://localhost:3000
AUTH0_ISSUER_BASE_URL=https://<your-domain>.auth0.com
AUTH0_CLIENT_ID=<your-client-id>
AUTH0_CLIENT_SECRET=<your-client-secret>
4. Set Up API Route
- Create a dynamic API route to handle authentication.
File: app/api/auth/[auth0]/route.js
import { handleAuth } from '@auth0/nextjs-auth0';
export default handleAuth();
This route automatically provides endpoints for:
- /api/auth/login – Log in users.
- /api/auth/logout – Log out users.
- /api/auth/me – Fetch user information.
5. Add Authentication Context
- Wrap your Next.js app with the UserProvider to manage authentication state. File: app/layout.jsx
import { UserProvider } from '@auth0/nextjs-auth0';
export default function RootLayout({ children }) {
return (
<html lang="en">
<body>
<UserProvider>{children}</UserProvider>
</body>
</html>
);
}
6. Add Login and Logout Links
- Add navigation links to log in and log out users:
<a href="/api/auth/login">Login</a>
<a href="/api/auth/logout">Logout</a>
7. Display User Profile
- Fetch and display the authenticated user's profile using the useUser hook:
import { useUser } from '@auth0/nextjs-auth0';
export default function Profile() {
const { user } = useUser();
if (!user) return <div>Please log in</div>;
return (
<div>
<h2>Welcome, {user.name}</h2>
<img src={user.picture} alt="Profile" />
</div>
);
}
8. Server-Side User Fetch
- For server-side rendering, retrieve the user session with getSession:
import { getSession } from '@auth0/nextjs-auth0';
export default async function ServerProfile() {
const session = await getSession();
const user = session?.user;
return <div>{user ? `Hello, ${user.name}` : 'Guest'}</div>;
}
What Comes Next?
- Explore Dashboard: In the Auth0 Dashboard, set up other parameters such as roles, multi-factor authentication, and custom domains.
- Increase Functionality: Include sophisticated features like hooks, rules, and social logins.
- Marketplace for Auth0: Explore the Auth0 Marketplace for connectors and extensions.
- Go Further: Study up on the Auth0 Next.JavaScript SDK.
With this setup, you have a robust authentication system integrated into your Next.js application.
Kshitish Kumar Pothal, that’s an impressive implementation! The focus on security and scalability truly sets a solid foundation for growth. What aspects of Auth0 did you find most useful?
Great work on implementing a robust authentication system! Your highlights showcase valuable insights into modern web development practices.