How to pass and get parameter with routerLink in Angular 2?

Question

I want to pass a value with url using routerLink. And read that value on another page. Like I have product list. On select of first record the id of that record pass to product detail page. After read that productId I want to show detail of that product.

So How can I pass and get the parameter?

Answer 1

I'm assuming you have some code like this:

{ path: 'product/:id', component: ProductDetailComponent }

in ProductList template

<a [routerLink]="['/product', id]">Home</a>

or

<a [routerLink]="['/product', 5]">Home</a>

where id is a variable, maybe you got it in a loop.

in ProductDetailComponent:

constructor(
  private route: ActivatedRoute,
  private router: Router
) {}
ngOnInit() {

  this.route.params
    // (+) converts string 'id' to a number
    .switchMap((params: Params) => this.yourProductService.getProductById(+params['id']))
    .subscribe((product) => this.product = product);
}

Router document: https://angular.io/docs/ts/latest/guide/router.html