Angular 2 - Using Shared Service

Question

Looks like shared services is the best practice to solve many situations such as communication among components or as replacement of the old $rootscope concept of angular 1. I'm trying to create mine, but it's not working. Any help ? ty !!!

app.component.ts

import {Component} from 'angular2/core';
import {OtherComponent} from './other.component';
import {SharedService} from './services/shared.service';
@Component({
selector: 'my-app',
providers: [SharedService],
directives: [OtherComponent],
template: `
    <button (click)="setSharedValue()">Add value to Shared Service</button>
    <br><br>
    <other></other>
`
})
export class AppComponent { 
data: string = 'Testing data';
setSharedValue(){
    this._sharedService.insertData(this.data);
    this.data = '';
    console.log('Data sent');
}
constructor(private _sharedService: SharedService){}
}

other.component.ts

import {Component, OnInit} from "angular2/core";
import {SharedService} from './services/shared.service';
@Component({
selector : "other",
providers : [SharedService],
template : `
I'm the other component. The shared data is: {{data}}
`,
})
export class OtherComponent implements OnInit{
data: string[] = [];
constructor(private _sharedService: SharedService){}
ngOnInit():any {
    this.data = this._sharedService.dataArray;
}
}

Answer 1

In addition to your requirement and its solution, you can consider using Facade + Shared Services. I have a small project here: https://github.com/cmandamiento/angular-architecture-base

Answer 2

You need to add a global provider in your module, then you dont need to add this provider in each component. try this

app.module.ts

@NgModule({
    imports: [BrowserModule, FormsModule, HttpModule],
    declarations: [AppComponent, LoginComponent, InComponent],
    providers: [LoginService],
    bootstrap: [AppComponent]
})

app.component.ts

@Component({
    moduleId: module.id,
    selector: 'app',
    templateUrl: './app.component.html'
})
export class AppComponent {
    constructor(public loginService: LoginService) {

    }
}

login.component.ts

@Component({
    moduleId: module.id,
    selector: 'login',
    templateUrl: './login.component.html'
})
export class LoginComponent {

    constructor(public loginService: LoginService) {

    }
}

I hope this work for you.