How to Integrate the Auth0 Authentication Service With a React Application
Auth0 simplifies the process of establishing user identity in your web app. It provides secure and customizable authentication and authorization features through its API. Use it, and you won’t need to worry about building your own authentication system from scratch.
Integrating with Auth0 makes it easy to include reliable authentication in your React application and guarantees secure access to your app.
The following steps explain what’s necessary to integrate Auth0 into a React application.
What Is Auth0?
Auth0 is a web service that provides a secure API to handleuser authentication and authorizationin your apps.
It provides a customizable authentication system that you can easily integrate into your React application. Once you connect Auth0 to your app, it handles the rest of the authentication workload.
How Does Auth0 Work?
Auth0 provides a Universal Login feature that implements the authentication flow. Each time a user wants to log in, the API redirects them to an Auth0 login page, they get authenticated, and successful authentication payload data is then sent to your app.
You can customize the authentication workflow for your app by defining different login methods. The Universal Login provides a username and password as the primary authentication, but you can also add other options such as social login, via a provider like Google, and multi-factor authentication.
The advantage of using this type of authentication is that you don’t need to be familiar with identity protocols like OAuth 2.0 or OpenID Connect, which are commonly used to create secure authentication systems.
Create a New Project on Auth0 Developer Console
To get started, you will need to first sign up for anAuth0account. After signing up, navigate to your dashboard and clickCreate Applicationto configure the authentication project settings.
Auth0 provides different authentication configurations depending on the type of application you are building. For this tutorial, fill in your application name, selectSingle Page Web Applications, then click onSave.
Next, selectReactfrom the list of technologies supported by Auth0.
Configure the Application’s URIs
After creating your application and configuring the required settings, on your application’s dashboard, click on theSettingstab to set up the required URI properties.
Set the following properties:
For local development, you’re able to use http://localhost:3000 URL. However, once you push your code to production, you will have to provide your domain URLs.
Once you’re done filling in the URLs, go ahead and clickSave Changesat the bottom of the settings page.
Set Your Preferred Social Login Providers
On Auth0’s application dashboard left menu pane, click onAuthentication, then selectSocials. Next, click on theCreate Connectionbutton on the social connections settings page.
Finally, select and add your preferred social login provider.
Configure Auth0 Into Your React App
Integrate the Auth0 authentication service into your React application by building the login and success components.
1. Create a React Application and Set Up an ENV File
Create a React application, then open the project folder in your code editor. Next, in the root directory of your project folder, create an ENV file to hold your environment variables: your domain name and client ID. Log in to your Auth0 account, in the application’s dashboard, copy the domain name and client ID and save them in your ENV file as follows:
2. Install the Required Packages
Run this command on your terminal to install the required dependencies:
3. Wrap Your App Component With Auth0 Provider
Auth0 provider uses React Context. This allows you to access all its properties from within the App component. The Auth0 Provider takes three parameters: the client domain, the client ID, and the redirect URI.
Open the index.js file, delete the template React code, and add the code below:
4. Create a Login Page Component
Create a new folder in the /src directory of your React application, and name it pages. Inside this folder, create two files: Login.js and Success.js.
Open the login.js file and add the code below. The login page component will render a login button.
By default, Auth0 provides an email and password as the authentication method. Additionally, depending on the social login providers you selected, Auth0 will display the provider’s sign-in option as well.
5. Create a Success Page Component
This component will render two main features: an authenticated user’s profile and a sign-out button.
In the Success.js file, add the code below:
Once you log in and get authenticated by Auth0, Auth0 redirects you back to your app and sends in payload data to your app containing the user details. You can use this data within your app to build custom user profiles and manage user sessions. The User property from the UseAuth hook allows you to access specific user data.
The UseAuth0 hook also provides a property called isAuthenticated, which allows you to render the components conditionally. If a user is authenticated, the code will render their profile details and display a logout button component.
Conversely, if they are not, you will render the login button component. This means that you don’t need to specify the routes based on a user’s authentication status since this property automatically manages this process. Auth0 defines both the login and logout logic, making it easier for you to implement the authentication functionality.
Is the Auth0 Authentication Service Worth Trying?
Auth0 provides out-of-the-box solutions that handle your app’s authentication requirements. Additionally, the Auth0 service offers support for web, mobile, and native development platforms allowing you to easily integrate the authentication system with a technology stack of your preference.
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