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Learn how to manage dynamic buttons in Vue.js, showing or hiding them based on user authentication state easily.
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This video is based on the question https://stackoverflow.com/q/62366642/ asked by the user 'Ari' ( https://stackoverflow.com/u/5091805/ ) and on the answer https://stackoverflow.com/a/62366689/ provided by the user 'Boussadjra Brahim' ( https://stackoverflow.com/u/8172857/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Create Dynamic Buttons in Vue.js with Conditional Visibility

In the world of web development, creating a responsive and interactive user interface is crucial for a good user experience. One common scenario is managing navigation buttons dynamically based on the user's authentication status. In this post, we'll explore how to implement this functionality in a Vue.js application, specifically focusing on showing or hiding buttons like "Dashboard," "Login," and "Register" based on whether a user is signed in or not.

The Problem

Imagine you are developing a menu for your application that includes several buttons. For instance, you have buttons for "Dashboard," "Register," and "Login." However, you want the "Dashboard" button to be visible only when the user is signed in. Conversely, you want the "Register" and "Login" buttons to be hidden once the user is successfully logged in. So how do you achieve this dynamic behavior using Vue.js?

Initial Setup

First, let's take a look at how you might start defining your menu buttons within a Vue component:

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

In the HTML part, you might have something like this to display those buttons:

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

While this will let you render the buttons, it doesn't control their visibility based on the user's authentication state.

The Solution

To effectively manage the visibility of these buttons based on whether the user is signed in, we can use Vue's computed properties. Here’s how to adjust both the JavaScript and HTML parts of your Vue component.

Step 1: Using Computed Properties

Modify your items property to make it a computed property. This allows you to compute the visibility of each button dynamically based on the user's signed-in state. Here's an example:

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

Step 2: Update Your HTML Template

Now, let’s ensure the HTML reflects this setup by adding a v-if directive to the button rendering code. This directive will check the shown property of each button item before it is displayed:

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

With this adjustment, each button will only be displayed if its shown attribute evaluates to true. This effectively manages the render state of your menu buttons based on user authentication.

Additional Consideration

Additionally, once a user logs in, you might also want to replace the "Login" and "Register" buttons with a "Logout" button. This can be done by simply modifying the array to include a "Logout" item when the user is signed in.

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

Conclusion

By leveraging Vue.js's computed properties, you can easily create a dynamic button interface that adapts to user authentication status. This not only improves usability but also enhances security by preventing unauthorized access to certain parts of your application.

With these steps, you're now equipped to implement and manage dynamic buttons in your Vue.js application, ensuring seamless navigation for users. Happy coding!