CODEWITHSUNDEEP
angular
BeetleJuice
BeetleJuice

Reputation: 40916

Angular 6: given ElementRef, can I get ViewContainerRef

Template

<div my-directive></div>

Directive

constructor(vc: ViewContainerRef, el: ElementRef, svc: MyService) {}

useService() {
  this.svc.doWork(vc, el);
}

So the service needs both a ViewContainerRef and an ElementRef. Do I have to pass both? Is there a way to derive the view container from the element ref? If so I would only need to pass ElementRef to the service, and it would fetch the view container from it.

Alternatively, can ElementRef be derived from ViewContainerRef? Seems impossible since I assume a single view container can have multiple elements.

Upvotes: 4

Views: 7020

Answers (1)

Reactgular
Reactgular

Reputation: 54801

You can use the element reference from the view. They both reference the same DOM element. 

constructor(vc: ViewContainerRef, el: ElementRef, svc: MyService) {
     console.log(vc.element.nativeElement === el.nativeElement);
     // prints true
     this.svc.doWork(vc, vc.element);
}

Upvotes: 5

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