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Render content between the component tags

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When a component is rendered, content inside it is ignored, for example:

import { Component } from '@angular/core';
@Component({
  selector: 'app-root',
  template: '<div>{{title}}</div>',
})
export class AppComponent {
  title = 'app works!';
}

Using it like:

<app-root>Ignored content</app-root>

Renders:

<div>app works!</div>

But looking at PrimeNg dialog, they use components like this:

<p-dialog [(visible)]="display">
    <p-header>
        Header content here
    </p-header>
    Content
    <p-footer>
        Footer content here
   </p-footer>
</p-dialog>

As Header content hereContent and Footer content here are inside the component, why are not they getting ignored and how can I achieve this?

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1 Answer

  1. Add <ng-content></ng-content> to the component’s template where the content should be projected:

    @Component({
      selector: 'app-root',
      template: '<div>{{title}}</div>
                 <br>
                 <ng-content></ng-content>',
    })
    export class AppComponent {
      title = 'app works!';
    }
    

    Content to be projected:

    <app-root>This is projected content!</app-root>
    

    The output will be:

    app works!
    This is projected content!
    

    Here is a great article about Angular Content Projection (Angular 1 Transclusion): Transclusion in Angular 2 with ng-content

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