When it comes to web development, Angular is one of the most popular frameworks out there. Its robustness and flexibility make it a top choice for building dynamic and responsive web applications. One important aspect of any web application is the login page, which allows users to authenticate themselves and gain access to the application’s features and content.
In this article, I will delve into the creation of an Angular login page using GitHub as the authentication provider. GitHub, known for its version control and collaboration features, offers a seamless way to integrate authentication into our web applications.
The first step in creating an Angular login page with GitHub authentication is to set up a new Angular project. This can be done using the Angular CLI by running the command ng new my-login-app in your command line interface. Once the project is set up, navigate to its root directory using cd my-login-app.
Next, we need to install the necessary dependencies. Run the command npm install @angular-oauth2-oidc to install the Angular OAuth2 OIDC library, which will handle the authentication process with GitHub.
Once the dependency is installed, we can start configuring the login page. Create a new component for the login page by running ng generate component login. This will generate the necessary files and code for our login page component.
Now, let’s dive into the code of our login component. Open the login.component.ts file and import the necessary modules:
import { Component, OnInit } from '@angular/core';
import { OAuthService } from 'angular-oauth2-oidc';
@Component({
selector: 'app-login',
templateUrl: './login.component.html',
styleUrls: ['./login.component.css']
})
export class LoginComponent implements OnInit {
constructor(private oauthService: OAuthService) { }
ngOnInit(): void {
}
loginWithGitHub(): void {
this.oauthService.initCodeFlow();
}
}
In the code above, we import the Component and OnInit modules from the Angular core library, as well as the OAuthService module from the Angular OAuth2 OIDC library. We then define our login component and inject the OAuthService into our constructor.
The ngOnInit method is a lifecycle hook that Angular calls after initializing the component. Here, we can perform any necessary setup tasks.
The loginWithGitHub method is called when the user clicks on the GitHub login button. Inside this method, we call the initCodeFlow method of the OAuthService, which will initiate the GitHub authentication process.
Now, let’s move on to the HTML template of our login component. Open the login.component.html file and add the following code:
Angular GitHub Login Page
In the code above, we create a heading with the text “Angular GitHub Login Page” using the <h2> tag. We also add a button with the text “Login with GitHub” that calls the loginWithGitHub method when clicked.
With the code in place, we can now test our Angular login page with GitHub authentication. Start the development server by running ng serve in the command line, and navigate to http://localhost:4200 in your web browser.
Upon loading the page, you will see the heading “Angular GitHub Login Page” and the “Login with GitHub” button. Clicking the button will redirect you to the GitHub login page, where you can enter your GitHub credentials to authenticate yourself. Once authenticated, you will be redirected back to your Angular application.
And there you have it! A fully functional Angular login page with GitHub authentication. With this setup, you can now build out the rest of your web application’s features and content, ensuring that only authenticated users have access.
Conclusion
The Angular framework provides an excellent foundation for creating dynamic and secure web applications. With the integration of GitHub as the authentication provider, we can easily build a login page that allows users to authenticate themselves using their GitHub credentials. By following the steps outlined in this article, you can create your own Angular login page with GitHub authentication and start building amazing web applications.