Скачать или смотреть Troubleshooting Angular Router Navigation ID Issues in Version 10.1.6

Explore solutions to common navigation issues in Angular 10.1.6, including unique ID anomalies and navigation triggers.
---
This video is based on the question https://stackoverflow.com/q/64433912/ asked by the user 'ENRICO FACCHINETTI' ( https://stackoverflow.com/u/10734697/ ) and on the answer https://stackoverflow.com/a/64508213/ provided by the user 'ENRICO FACCHINETTI' ( https://stackoverflow.com/u/10734697/ ) 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: Angular/router v10.1.6 - router navigation unique ID is always 1 and never changes. And other router.events.pipe anomalies

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.
---
Troubleshooting Angular Router Navigation ID Issues in Version 10.1.6

If you're developing web applications using Angular, you may encounter some peculiarities when working with the Angular Router, especially in version 10.1.6. A common question among developers is: Why does the unique navigation ID assigned by the router always remain the same during navigation? In this post, we will explore this issue and provide practical solutions to ensure smooth navigation within your Angular applications.



Understanding the Router Setup

In an Angular application, you typically configure the router using the RouterModule in your routing module. For example, a basic setup might look like this:

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

In this configuration, both PageHomeComponent and Page1Component may share a common selector, <app-view-loader>, which utilizes sub-components to manage the entire UI based on user navigation.

The Problem: Constant Unique ID

As you navigate between components using the router, you may notice that the unique navigation ID, which is meant to change with each transition, always remains at 1. For instance, upon navigating from /home to /page1, the debug console consistently shows:

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

Explaining the Unique ID Issue

The static unique ID can be traced back to how navigation events are triggered. The ID does not change because your navigation is not being initiated in a way that the router recognizes as a new navigation context.

Solutions to Unique ID Issues

1. Implementing RouterLink

To generate a new unique ID for every navigation, use the routerLink directive in your HTML templates. For example:

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

This simple implementation ensures that each navigation action is tracked separately by the router, thus producing a new unique ID during transitions.

2. Using Router Navigate Programmatically

If you prefer controlling navigation through TypeScript code, use the router.navigate() method:

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

This method will establish a new navigation state and generate a fresh unique ID, rectifying the problem of it remaining static.

Additional Navigation Anomalies

Issue with Back/Forward Buttons

Another common issue arises when using the browser's back and forward buttons: the navigationTrigger remains 'imperative', and restoredState is null. This behavior stems from not properly utilizing the router for navigation.

Solution to Back/Forward Navigation

Just like the unique ID issue, ensuring that all navigations are handled via routerLink or router.navigate() resolves this problem. When set up correctly, the navigationTrigger will correctly switch to 'popstate', and restoredState will track previous navigation states accurately.



Conclusion

Navigating through your Angular application should not be a hassle. By understanding the structure of the Angular Router and adopting the appropriate strategies, you can fix issues related to unique navigation IDs and navigation triggers. Remember, effective use of the routerLink directive and the router.navigate() method is key to a fluid and properly tracked navigation experience.

For any further questions or unique case scenarios, feel free to reach out and explore the community for more insights!