I have a parent component and a child component. There is a ngif statement into child component. I want to use the same ngif into the parent component. Below is the sample code.
Child component:
`selector: 'child-component',
template: `
<div class="container">
<div class="panel panel-danger">
<div
class="panel-heading"
(click)="opened = !opened">
Click me
</div>
<div
class="panel-body"
*ngIf="opened">body</div>
</div>
</div>
`,
styleUrls: [ './app.component.css' ]
})
export class ChildComponent {
opened = false;
title = 'Hello Panel';
body = 'this is the content';
}
`
parent component:
<h3 *ngIf="loadcondition">This is Prent component</h3>
I tried to achieve the same with @Viewchild. In parent.component.ts--
import {ChildComponent} from './child-component';
loadcondition : boolean = true;
@ViewChild(ChildComponent) private childreference: ChildComponent;
ngAfterViewInit() {
this.loadcondition = this.childreference.opened= false;
console.log('on after view init', this.childreference);
}
parent.component.html--
<div class="center"><h3 *ngIf="loadcondition">This is Parent component</h3>
<child-component></child-component>
</div>
But unfortunately, childreference return undefined in the console. Is there any another way to access child conditions into parent component instead of @Viewchild.
if you use a reference variable, you can access to all the properties of children.
<div class="center">
<h3 *ngIf="mychild.opened">This is Parent component</h3>
<child-component #mychild></child-component>
</div>
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