angular-cn/public/docs/_examples/router/ts/app/heroes/hero-detail.component.1.ts

// #docregion
import { Component } from '@angular/core';
import { Hero, HeroService } from './hero.service';
import { Router, OnActivate, RouteSegment } from '@angular/router';

@Component({
  template: `
  <h2>HEROES</h2>
  <div *ngIf="hero">
    <h3>"{{hero.name}}"</h3>
    <div>
      <label>Id: </label>{{hero.id}}</div>
    <div>
      <label>Name: </label>
      <input [(ngModel)]="hero.name" placeholder="name"/>
    </div>
    <p>
      <button (click)="gotoHeroes()">Back</button>
    </p>
  </div>
  `,
})
export class HeroDetailComponent implements OnActivate  {
  hero: Hero;

  // #docregion ctor
  constructor(
    private router: Router,
    private service: HeroService) {}
  // #enddocregion ctor

  // #docregion OnActivate
  routerOnActivate(curr: RouteSegment): void {
    let id = +curr.getParam('id');
    this.service.getHero(id).then(hero => this.hero = hero);
  }
  // #enddocregion OnActivate

  // #docregion gotoHeroes
  gotoHeroes() {
    // Like <a [routerLink]="['/heroes']">Heroes</a>
    this.router.navigate(['/heroes']);
  }
  // #enddocregion gotoHeroes
}