Скачать или смотреть Building Conditional Nested Menu Arrays in Angular Using User Permissions

Learn how to dynamically build conditional nested arrays of objects for menus in Angular based on user permissions.
---
This video is based on the question https://stackoverflow.com/q/76542654/ asked by the user 'cwmd' ( https://stackoverflow.com/u/17266870/ ) and on the answer https://stackoverflow.com/a/76542982/ provided by the user 'Daniel Beck' ( https://stackoverflow.com/u/3412322/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Conditionally building/modifying a nested array of objects

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Building Conditional Nested Menu Arrays in Angular Using User Permissions

Creating a functional and user-friendly menu is a critical aspect of any web application. However, when it comes to personalizing this menu based on user permissions, things can get complicated. This guide will guide you through the process of conditionally building and modifying a nested array of objects for your menu in Angular, all based on the user's permissions stored in sessionStorage.

The Challenge

Consider an Angular application where you want to create a menu structure based on user permissions. Below is a simplified example of a menu represented as an array of objects:

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

This array generates a menu similar to the following structure in your application component:

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

However, with various user permissions stored as booleans in sessionStorage, you need a strategy to show or hide specific menu items based on these permissions. For instance, if canCreateClients is set to false, the corresponding route to create clients should not appear in the menu.

The Solution: Modify Your Menu Structure

Step 1: Integrate Permission Checks into Your Menu Design

The solution lies in updating your menu items to include a field that specifies the required permission. Here’s how you can restructure an individual item:

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

Step 2: Dynamic Rendering Based on Permissions

To render the menu conditionally based on user permissions, you'll need to iterate through your menu structure while checking against the user's permissions. Imagine you’ve loaded user permissions into a variable like this:

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

You would then incorporate a condition into your rendering logic. Here's the pseudocode outlining the concept:

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

Step 3: Recursion for Nested Menu Items

Since your menu may contain nested items, it’s essential to recursively apply this logic to all sub-items within the menu. By doing this, you ensure that all menu levels consider the user’s permissions properly.

Advantages of This Approach

Single Source of Truth: All permission needs are documented within the menu structure itself, making it easier to manage.

Simplified Render Logic: The rendering code remains clear and clean by merely checking permissions against an array.

Dynamic Updation: Changes in user permissions can be easily reflected in the menu without needing extensive adjustments elsewhere in the code.

Conclusion

Building dynamic menus in Angular can be straightforward if you structure your code efficiently. By embedding permission requirements directly in your menu items, you can create a robust system that holds true to user access levels without overwhelming complexity. This not only enhances your application’s user experience but also simplifies future developments.

Try implementing this solution in your Angular application and witness how easily you can manage dynamic menus based on user permissions!