Angular 2, component inside main component

Question

I've played with the angular 2 demo on angular.io. Now I want to create a new component and use it inside my app.

My current app:

import {Component, Template, bootstrap} from 'angular2/angular2';
import {UsersComponent} from './components/users/component.js';

// Annotation section
@Component({
  selector: 'my-app'
})
@Template({
  url:"app.html"
})
// Component controller
class MyAppComponent {
  newName:string;
  names:Array<string>;
  constructor() {
    this.name = 'Florian';
  }

  showAlert(){
    alert("It works");
  }

  addName(){
    names.push(newName);
    newName = "";
  }
}

bootstrap(MyAppComponent);

My component:

import {Component, Template, bootstrap} from 'angular2/angular2';
// Annotation section
@Component({
  selector: 'users'
})
@Template({
  url:"./template.html"
})
// Component controller
class UsersComponent {
  newName:string;
  names:Array<string>;
  constructor() {

  }

  addName(){
    names.push(newName);
    newName = "";
  }
}

I'm not sure if the syntax of my user component is correct at all.

My app template:

<h1>Hello {{ name }}</h1>
<h2>{{2+2}}</h2>
<hr />
<button (click)="showAlert()">Click to alert</button>
<users></users>

So how do I wire up the User component?

The error I get in the console:

 "Error loading "components/users/component.js" at <unknown>↵Error loading "components/users/component.js" from "app" at http://localhost:8080/app.es6↵Cannot read property 'replace' of undefined"

Answer 1

Angular calendar demo has two nested components (calendar and calendar-cell) https://github.com/djsmith42/angular2_calendar.git . From what I can see there your MyAppComponent should reference Users component from @Template's directives list, like this:

@Template({
  url: System.baseURL+'app/components/calendar/calendar.html',
  directives: [
    Foreach,
    If,
    CalendarCell
  ]
})

Answer 2

In this link of Angular2 web https://angular.io/docs/ts/latest/tutorial/toh-pt3.html# you can see that adding directives: [...] inside of @Components for example:

@Component({
  selector: 'my-app',
  directives: [UsersComponent]
})

but otherwise the link use template inside the component, do not know if this will work if you use @Template({ url:"app.html"}) outside component.

you can watch the file name app.appcomponet.ts for more details, hopefully help.