I've found code to dynamically create child components, pass data to them, and render them accordingly.
http://plnkr.co/edit/wwHEZkbvKmNVF0Snr2ZB?p=preview
However, I'm not sure how to bind the data from the child components to its parent. In the Plunker I included above, I'd like to have 2-way data binding to showNum.. Any idea?
I hope this is what you want.
LIVE DEMO : http://plnkr.co/edit/SPbo1Cw7mDadfLK3ElEC?p=preview
src/dynamic-component.ts
import 'rxjs/Rx';
export default class DynamicComponent {
myData:any;
@Input() set componentData(data: {component: any, inputs: any }) {
...
this.myData=data; //assinging parent data object to myData object.
...
...
component.instance.showNum=this.myData.inputs.showNum
//component.instance.someNumber syntax allows you to pass varible to dynamically created component
//here, I'm using subject from rxjs and subscribing to it as below
component.instance.emitNumber$.subscribe(v=>{
console.log('getting'+ v);
console.log(this.myData);
this.myData.inputs.showNum=v; //assigning subscribed value back to parent object
console.log(this.myData);
});
}
src/hello-world-component.ts
import {Observable,Subject} 'rxjs/Rx';
@Component({
selector: 'hello-world',
template: `
...
<input [(ngModel)]="showNum" (keyup)="updateValue(showNum)" type="text">
`,
export default class HelloWorldComponent {
@Input() showNum:number;
emitNumber=new Subject<number>(); //using rxjs subject
emitNumber$=this.emitNumber.asObservable();
updateValue(val){
this.emitNumber.next(val); //emitting value back to dyanmic component
}
}
})
Parent
<div *ngFor="let x of components">showNum of parent: {{x.inputs.showNum}}<br></div>
same with world-hello-component.ts.
