angular-cn/public/docs/_examples/dependency-injection/ts/app/injector.component.ts

// #docplaster
// #docregion
import { Component, Injector }  from '@angular/core';

import { Car, Engine, Tires }   from './car/car';
import { Hero }                 from './heroes/hero';
import { HeroService }          from './heroes/hero.service';
import { heroServiceProvider }  from './heroes/hero.service.provider';
import { Logger }               from './logger.service';

// #docregion injector
@Component({
  selector: 'my-injectors',
  template: `
  <h2>Other Injections</h2>
  <div id="car">{{car.drive()}}</div>
  <div id="hero">{{hero.name}}</div>
  <div id="rodent">{{rodent}}</div>
  `,
  providers: [Car, Engine, Tires, heroServiceProvider, Logger]
})
export class InjectorComponent {
  constructor(private injector: Injector) { }

  car: Car = this.injector.get(Car);

  // #docregion get-hero-service
  heroService: HeroService = this.injector.get(HeroService);
  // #enddocregion get-hero-service
  hero: Hero = this.heroService.getHeroes()[0];

  get rodent() {
    let rousDontExist = "R.O.U.S.'s? I don't think they exist!";
    return this.injector.get(ROUS, rousDontExist);
  }
}
// #enddocregion injector

/**
 * R.O.U.S. - Rodents Of Unusual Size
 * // https://www.youtube.com/watch?v=BOv5ZjAOpC8
 */
class ROUS { }