Angular 2 - 将参数传递给Route

Question

I have a <a> tag like below,

<a [routerLink]="[/Person']">Person</a>

So I want to pass the person.id to this /Person router. How can I pass it & handle it on @RouteConfig like params in Angular 1

Answer 1

Pass to router link:

<a [routerLink]="['/Person', person.id]">Person</a>

Handle in component:

this.route.params.subscribe(
   (params: Params) => {
      this.id = params['id']; 
   }
);

Second way:

this.route.params.forEach(
   (params: Params) => {
       this.id = params['id'];
   }
);

In this example you have to inject ActivatedRoute ( eg as route property ) like that:

constructor(private route: ActivatedRoute) {}

If you subscribe - it is important to unsubscribe Observable to prevent memory leaks .

Full example:

export class SimpleComponent implements OnInit, OnDestroy {
    private id: number;
    private route$: Subscription;
    constructor(private route: ActivatedRoute) {}

    ngOnInit() {
        this.route$ = this.route.params.subscribe(
            (params: Params) => {
                this.id = +params['id']; // cast to number
            }
        );
    }
    ngOnDestroy() {
        if (this.route$) this.route$.unsubscribe();
    }
}

Config :

export const routes = [
    ...
    { path : 'Person/:id', component : ...},
    ...
];

Also, @RouteConfig is deprecated .

Answer 2

你可以传递它

<a [routerLink]="['/Person', propertyWithId]">Person</a>

Answer 3

In my case, directive [routerLink] didn't work for me. So, I had to do it programmatically.

Component template:

<a (click)="goToEdit(person.id)" >Edit</a>

Component Class:

import { Router } from '@angular/router';

export class PersonComponent{

    constructor(private _route: Router){ }

    goToEdit(id){
        this._route.navigate(['Person/' + id]);
    }

}