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Discover how to project the same content across multiple `mat-steps` in Angular using effective techniques and templates for seamless design.
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How to Effectively Use mat-stepper for Shared Content Projection in Angular

In the world of Angular development, creating dynamic and reusable components is crucial for building efficient applications. One common challenge developers face is how to project the same content in multiple mat-steps while using the mat-stepper component from Angular Material. If your layout requires shared content across different steps, you might wonder how to achieve this using Angular's content projection capabilities. Here, we will explore a clear solution to this problem.

Understanding the Problem

When implementing a mat-stepper, it's common to have a scenario where certain content remains constant across multiple steps. For instance, you might have a form or an instructional text that needs to be displayed whether you are on Step 1 or Step 2. The example layout you might envision could look something like this:

Step 1: Displays shared content alongside unique content for Step 1.

Step 2: Displays the same shared content alongside unique content for Step 2.

The challenge arises when trying to effectively reuse this shared content within the Angular context. Let's dive into the solution.

Solution: Using ngTemplateOutlet for Content Projection

Step-by-Step Implementation

To achieve the desired result, you can utilize Angular's ngTemplateOutlet directive. This directive allows you to render a template dynamically within another template, making it perfect for our requirement of shared content in the mat-stepper. Here’s a breakdown of how to set it up:

Define Your mat-stepper: Start by defining your mat-stepper with individual mat-step components.

Incorporate ngTemplateOutlet: Instead of using ng-content, which doesn’t support your needs directly, employ ngTemplateOutlet to inject the shared content template wherever needed.

Create a Shared Template: Define a ng-template that holds the shared content outside of the steps.

Example Code

Here’s how your implementation might look in code:

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

Explanation of the Implementation

<mat-stepper>: This element wraps your steps while defining the overall structure.

<mat-step>: Each step contains its unique label and specific content.

<ng-container *ngTemplateOutlet="sharedContent">: This instruction dynamically injects the sharedContent template into each step, allowing you to maintain a consistent display across steps.

<ng-template>: Here, you define what the shared content is, which can be reused without duplication.

Conclusion

In summary, projecting the same content in multiple mat-steps in Angular's mat-stepper is not only possible but also elegantly achievable. The use of ngTemplateOutlet simplifies your code and enhances maintainability by allowing you to define shared content once and reference it as needed.

This approach not only reduces redundancy in your code but also enhances the user experience by providing consistent information throughout the workflow. So the next time you are tackling a similar requirement, remember this simple yet effective technique to streamline your Angular applications.

By following the outlined steps above, you'll be able to efficiently manage shared components in your mat-stepper layouts. Happy coding!