Solving Angular 9.1.9 Conditional Routing with Parameters for Wizard Steps

Описание: Learn how to implement conditional routing in Angular 9.1.9 for a wizard-style component, ensuring specific components load for each stage and step without repeating the main wizard component.
---
This video is based on the question https://stackoverflow.com/q/63249153/ asked by the user 'Jimmyt1988' ( https://stackoverflow.com/u/360822/ ) and on the answer https://stackoverflow.com/a/63250186/ provided by the user 'Jimmyt1988' ( https://stackoverflow.com/u/360822/ ) 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 9.1.9 conditional routing with parameter

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.
---
Solving Angular 9.1.9 Conditional Routing with Parameters for Wizard Steps

When developing a multi-stage wizard in Angular 9.1.9, you may run into the issue of wanting to load specific components based on the stage and step. The usual routing setup can be somewhat constrictive if you need to manage distinct components for each phase of your wizard. Let’s break down the problem and find an optimal solution together.

The Problem at Hand

Imagine you have a wizard with different stages, each containing unique steps that perform very specific tasks. However, upon routing to a stage, the parent WizardComponent is loaded again, which is not the desired behavior when your aim is to show only pertinent child components.

Current Routing Setup:

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

This setup makes it cumbersome to manage distinct components for each combination of stage and step.

The Ideal Solution

To resolve the issue of loading the WizardComponent repeatedly, the routing structure should be reorganized. The solution is to define the routing path in a more consolidated manner, which allows loading the appropriate step components without re-rendering the WizardComponent for each route.

Revised Routing Structure

Here’s how you can efficiently structure your routing:

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

Breakdown of the Routing Structure

Base Path: Start with a path like test, which retains the WizardComponent throughout the navigation process.

Child Routes: Define each stage and its steps as child routes of the /test path. This way, as you navigate through stage/1/step/1 or stage/2/step/1, the WizardComponent remains intact while only the relevant step components are loaded.

Optional Considerations

Although the above solution works, it's important to consider lazy loading. While lazy loading can enhance performance by loading modules only as needed, the demonstration here keeps the routing straightforward for clarity. If looking to optimize performance further, investigate lazy loading options for the wizard steps.

Extracting Stage and Step Numbers

For cases where you may want to parse the stage and step directly from the URL path, here’s a quick reference:

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

This approach allows you to read the current stage and step from the URL - though it's worth noting that relying on the URL in this manner could be less effective in maintaining your application's integrity.

Conclusion

By restructuring your routing setup, you can gain complete control over which components are rendered for your wizard stages and steps in Angular 9.1.9. This avoids redundancy, simplifies navigation, and adheres to best practices in maintaining a clean and efficient component architecture.

Feel free to explore other advanced routing techniques and lazy loading as you scale your Angular applications for an even smoother user experience!