如何在 Angular 的不同子组件中订阅 Observable

Question

I have component parent and two child A and B component. I created a Observable in parent and subscribe in A by passing though @input in A .

On change on parent A function get calls through subscription.

But i want to change the B also. i have checked links

I want to get the change of parent model in all the childrens

Answer 1

I have solved :

 let c: Observable<Array<WorkFlow>> = Observable.create((obs: Observer<Array<WorkFlow>>) => {
            this._wfService.getWorkFlows(0, 50).subscribe((data: Array<WorkFlow>) => {
                this.workFlows = data;
                obs.next(this.workFlows);
            }, (err: Response) => {
                console.error(err);
            });
        });
this.workFlowsOb = c.shareReplay(1);

I was returning the c before , now i used c.shareReplay and share to Observable that is shared to all children components