@ViewChild(CdkPortalOutlet) returns undefined in AfterViewInit

Question

Trying to query a ng-template with CdkPortalOutlet is always unsuccessful, and I cant understand why?

<ng-template CdkPortalOutlet></ng-template>

@ViewChild(CdkPortalOutlet) test: CdkPortalOutlet;

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Answer 1

In order to use CdkPortalOutlet directive in AppComponent template you have import PortalModule in AppModule(i.e. NgModule where AppComponent has been declared)

import { PortalModule } from '@angular/cdk/portal';
...

@NgModule({
  imports:      [ BrowserModule, FormsModule, PortalModule, OverlayModule ],
                                              ^^^^^^^^^^^^
  declarations: [ AppComponent ],
  bootstrap:    [ AppComponent ]
})

export class AppModule { }

Also the Angular HTML parser is case sensitive so that you need to use it like:

<ng-template cdkPortalOutlet></ng-template>
             ^^^
          lower case

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