While working with authentication, we all have encountered using Auth0 once in the journey of development. But still, let’s have an introduction to Auth0. Auth0 is an unfold solution to add authentication and authorization services to our web application. If you want a more detailed explanation of Auth0 then check out this article: What is Auth0? Features, Benefits And Its Implementation
In this blog, we will see how we can implement Auth0 with Angular. Think of Auth0 as a superpower for Angular that makes websites more secure and useful. So, let’s begin and learn how to use Auth0 with Angular!
➡️ Step 1: Create an application in the Auth0 dashboard as shown in the picture below. There is a button to create an application and choose a single-page application. Then an application will be generated.
➡️ Step 2- Go to settings in your generated application, you will get your client ID and client secret that you will need in your project. Then configure the callback URL, you should set the Allowed Callback URL to http://localhost:4200.
After that, configure logout URLs, the logout URL you need to add to the Allowed Logout URLs field is http://localhost:4200.
Then, to configure allowed web origins, set the Allowed Web Origins to http://localhost:4200.
➡️ Step 3- Create an Angular application by hitting the command:
ng new <Project name>
➡️ Step 4- Install the Auth0 SDK by hitting the command:
npm install @auth0/auth0-angular
➡️ Step 5- After installation, we need to register and configure AuthModule. For that, inside the environment.ts file, provide the domain, client ID, authorizationParams and redirect_uri. All of this information we can get from the application that we have generated in the auth0 dashboard.
➡️ Step 6- Navigate to app.module.ts file, import the AuthModule type from import {AuthModule} from ‘@auth0/auth0-angular’ and add AuthModule to the application by calling AuthModule.forRoot inside the imports array.
➡️ Step 7- After configuring these steps, we can add login to our application.
After that, add these methods in the TypeScript file, along with adding authService by injecting it into the constructor and importing it like this:
import {AuthService} from "@auth0/auth0-angular";
public auth: AuthService
By following these steps, we can be able to login in our application. Now we need to fetch the user’s profile information.
➡️ Step 8- We can get the user profile information by subscribing to user$ observable.
Now the slightly challenging part is that we need to get the access token so that we can pass that token to the header in order to call an authenticated API.
Step 9- We can get the access token by calling the getAccessTokenSilently() like this:
Here, we are subscribing to the getAccessTokenSilently() and storing the access token in local storage.
So, this is all about Auth0 implementation with Angular!
In conclusion, our exploration of Auth0 implementation with Angular has unveiled a straightforward yet powerful approach to enhancing the security and functionality of web applications. Auth0, with its robust authentication and authorization services, provides a seamless solution for developers seeking to fortify their projects.
Through a step-by-step guide, we’ve demonstrated how to set up and configure Auth0 within an Angular environment, covering essential tasks like application creation, SDK installation, and user profile management. We’ve also tackled the critical aspect of access token acquisition for authenticated API calls.
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