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Learn how to check if a user is logged into SAP Spartacus and display different content based on their login status.
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This video is based on the question https://stackoverflow.com/q/64196974/ asked by the user 'Selva Ajitha' ( https://stackoverflow.com/u/10295513/ ) and on the answer https://stackoverflow.com/a/64203538/ provided by the user 'tobi-or-not-tobi' ( https://stackoverflow.com/u/2890959/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Determine If a User is Logged In Using SAP Spartacus

When building a dynamic web application, one common requirement is to show different content based on whether a user is logged in or not. This can enhance user experience significantly, allowing you to tailor the information displayed. If you’re using SAP Spartacus, a popular framework for developing e-commerce storefronts, this task can be accomplished with ease using the available authService methods.

The Problem: Showing Different Content Based on User Login Status

For instance, you might want to display a welcome message tailored to the logged-in user or prompt new visitors with a call to action. The challenge is to determine if the user is logged in and toggle the display of your content accordingly.

The Solution: Using authService.isUserLoggedIn()

SAP Spartacus provides an efficient way to check a user’s authentication status through the authService. This service contains the method isUserLoggedIn(), which returns an observable indicating whether the user is currently logged in.

Step 1: Using the authService.isUserLoggedIn()

Here's how you can implement this in your component:

Import the AuthService: Ensure you have the necessary imports to utilize the authentication service.

Create an Observable: Use authService.isUserLoggedIn() to create an observable representing the login state.

Display the Appropriate Content: Utilize Angular's ngIf directive to conditionally show content based on the login status.

Step 2: Implementing the Code

Below is how you can structure your code to achieve this:

HTML Structure

[[See Video to Reveal this Text or Code Snippet]]

In the above code:

The *ngIf directive checks if isLoggedIn is true.

If the user is logged in, "User is logged in" will be displayed.

If the user is not logged in, the template named differentContent will be shown, displaying alternative content.

Component Controller

You’ll need to define the isLoggedIn property in your component’s TypeScript file:

[[See Video to Reveal this Text or Code Snippet]]

In this snippet:

We import necessary modules.

We declare the isLoggedIn property as an observable of type boolean, which will update in real-time as the user logs in or logs out.

Summary

Using the authService.isUserLoggedIn() method in SAP Spartacus is a simple yet powerful way to manage user authentication status on your storefront. By toggling content based on whether a user is logged in, you can significantly improve the user experience.

By following the steps outlined above, you should now be able to effectively judge a user's login state and display respective content. Happy coding!