ngTemplateOutlet with dynamic value

Question

I\'m using ngTemplateOutlet with dynamic value.

Answer 1

Add these to the components class

@ViewChild('one') one:TemplateRef<any>;
@ViewChild('two') two:TemplateRef<any>;

and get the template references using

<form no-validate (ngSubmit)="onSubmit(search)">
    <ng-container *ngFor="let part of objectKeys(config);">
        <ng-container *ngIf="config[part]">
            <ng-container [ngTemplateOutlet]="this[part]"></ng-container>
        </ng-container>
    </ng-container>
</form>

StackBlitz example

Answer 2

• Render template refs by passing dynamic values to ngTemplateOutlet Directive
• use Attribute binding to pass reference of templateRef stored in templateRefs array

.ts file

export class RenderTemplateRefsInNgTemplateOutletDirective {
  @ViewChild('one', { static: false }) one:TemplateRef<any>;
  @ViewChild('two', { static: false }) two:TemplateRef<any>;
  @ViewChild('three', { static: false }) three:TemplateRef<any>;

  templateRefs: Array<TemplateRef<any>> = [];

  config: any = {
    'one': true,
    'two': false,
    'three': true,
  }

  objectKeys = Object.keys;

 ngAfterViewInit() {
  const values = Object.keys(this.config).filter(key => this.config[key]);
  values.forEach(key =>{
    this.templateRefs.push(this[key]); // accessing **this** component ViewChild 
                                      // with same **name** defined as `key` in forEach
  })
 }
}

.html

<ng-container *ngFor="let template of templateRefs">
    <ng-container [ngTemplateOutlet]="template"></ng-container>
 </ng-container>
 
 <ng-template #one>
 <h1>Hello One</h1>
 </ng-template>
 
 <ng-template #two>
   <h1>Hello Two</h1>
 </ng-template>
 
 <ng-template #three>
   <h1>Hello Three</h1>
 </ng-template>