Creating a Container Component in Angular 2 [Code Snippet]
Juergen Gutsch needed a shared reusable component which turned out to be easier than expected. Check out these two code snippets that might just help you too.
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In one of the last projects, I needed a shared reusable component, which needs to be extended with additional contents or functionality by the view who uses this component. In our case, it was a kind of a menu bar used by multiple views. (View, in this case, means routing targets.)
Creating such components was easier than expected. I anyway spent almost a whole day to find that solution, I played around with view and template providers, tried to access the template and to manipulate the template. I also tried to create an own structural directive.
But you just need to use the directive in the container component.
<nav>
<div class="navigation pull-left">
<ul>
<!-- the menu items --->
</ul>
</div>
<div class="pull-right">
<ng-content></ng-content>
</div>
</navThat's all. You don't need to write any TypeScript code to get this working. Using this component is now pretty intuitive:
<div class="nav-bar">
<app-navigation>
<button (click)="printDraft($event)">print draft</button>
<button (click)="openPreview($event)">Show preview</button>
</app-navigation>
</div>The contents of the - the buttons - will now be placed to the placeholder.
After spending almost a whole day to get this working my first question was: Is it really that easy? Yes, it is. That's all.
Maybe you knew about it. But I wasn't able to find any hint in the docs, on StackOverflow or in any Blog about it. Maybe this requirement isn't used needed often. At least I stumbled upon a documentation where ng-content as used and I decided to write about it. Hope it will help someone else.
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Published at DZone with permission of Juergen Gutsch, DZone MVB. See the original article here.
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