Access template reference inside a template element

Question

I'm using a library that expects me to specify body of a directive as a child of template element

<template customDirective>
   <custom-element #lookup></custom-element>
</template>

Is there a way to access custom-element#lookup inside my component.

For eg.,

@Component({
  selector: 'app-test',
  template: `
    <template customDirective>
       <custom-element #lookup></custom-element>
    </template>
  `
})
export class TestComponent {
  @ViewChild('lookup') viewChildRef;
  @ContentChild('lookup') contentChildRef;

  constructor() {
  }

  ngAfterContentInit(): void {
     console.log(this.viewChildRef); // <-- undefined
     console.log(this.contentChildRef); // <-- undefined
  }
}

I'm getting undefined in both cases.

yurzui · Accepted Answer · 2017-03-01 19:42:52Z

9

You cannot get reference to component inside template until you don't create embedded view.

Try using setter like:

@ViewChild('lookup') 
set lookUp(ref: any) {
  console.log(ref);
}

Plunker Example

answered Mar 1, 2017 at 19:42

yurzui

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1 Comment

anonk Over a year ago

Looks like it is set right before ngAfterViewInit() is called. Thanks.

Aleksandr Petrovskij · Accepted Answer · 2017-03-01 15:01:32Z

1

Try to look on lookedUpCustomElemRef inside ngAfterViewInit callback.

https://angular.io/docs/ts/latest/api/core/index/ViewChild-decorator.html

answered Mar 1, 2017 at 15:01

Aleksandr Petrovskij

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