Angular2 using @Inputs with <router-outlet>s

Question

I have a sub-navigation in my page that displays some subviews below a common main view. I would like to pass an object to the subviews through the <router-outlet> so that I can retrieve the data once in the main component and just share it with my sub components.

Note: If I include the directive <one></one> in the main.html it works but this isn't my desired behavior.

Main View:

<h1>Details</h1>   
<a [router-link]="['./sub1']">One</a> | 
<a [router-link]="['./sub2']">Two</a> | 
<a [router-link]="['./sub3']">Three</a>   
<hr/>  
<router-outlet [data]="maindata"></router-outlet>

Sub View 1:

<h2>{{ data.name }}</h2>
...

Main View:

@Component({
    selector: 'main-detail',
    directives: [ROUTER_DIRECTIVES],
    templateUrl: './main.html'
})
@RouteConfig([
    { path: '/', redirectTo: '/one' },
    { path: '/one', as: 'One', component: OneComponent },
    { path: '/two', as: 'Two', component: TwoComponent },
    { path: '/three', as: 'Three', component: ThreeComponent }
])
export class MainComponent {
    maindata: Object = {name:'jim'};
}

Sub View 1:

@Component({
    selector: 'one',
    directives: [CORE_DIRECTIVES],
    inputs: ['data'],
    templateUrl: './one.html'
})
export class OneComponent {
    @Input() data;
}

Answer 1

If it's simple data you can pass them through RouteParams

<a [router-link]="['./sub3'],{name:'jim'}">Three</a> 

then in your sub view

@Component({     selector: 'one',     directives: [CORE_DIRECTIVES],     templateUrl: './one.html' }) export class OneComponent {     data: any;   constructor(params: RouteParams){     this.data = params.get('data');   } } 

You can also setup the route to always pass params from the component by moving the RouterConfig INSIDE the component (Note, this is not how it's normally done):

export class AppCmp {   history: string[] = [];   constructor(public list: PersonalizationList,               private router_: Router) {     list.get('histoy', (response) => {       this.history = response;     });     router_.config([       { path: '/', component: HomeCmp, as: 'Home', data: this.history },       { path: '/about', component: AboutCmp, as: 'About' }     ]);   } } 

Credit to the Source

If you are going to do something more complex I suggest using a service to communicate between routes/components. It's actually the way I prefer to do it.

Sample Service:

import {Injectable} from 'angular2/angular2';  @Injectable() export class CarsService {   list1: array<any> = ['a','b','c','d'];   list2: array<any>;    constructor() {     this.list2 = [1,2,3,9,11];   } } 

How you Inject a service:

export class Cars {   constructor(cars:CarsService) {     this.cmpList1 = cars.list1;     this.cmpList2 = cars.list2;   } } 

This way you can use the service to communicate regardless of parent/child or other weird restrictions.

Answer 2

Looks like syntax has been changed. Below works for me ~Angular4.0.0

HTML (Pass Route Parameters)

<li><a [routerLink]="['/templatecreate',{mode:'New'}]">New Job</a></li> 

Component

constructor(private route: ActivatedRoute) { }  ngOnInit() {          this.getTemplate();    this.sub = this.route.params.subscribe(params => { this.id = params['mode'];   console.log("Routing Mode", this.id);       }); } 

Answer 3

I think the proper Angular2 way to be passing data is via Dependency Injections (by using a Service) otherwise the user will be able to see the data you're passing in the browser's URL.

Also, using a Service will allow for "Separation of Concerns", meaning that Component A shouldn't be dependent on Component B.

Dependency Injection Links:

1) https://angular.io/guide/dependency-injection

2) https://angular.io/guide/dependency-injection-in-action

3) https://www.youtube.com/watch?v=MJrw43GP2u0