我有这个组件
@Component({
templateUrl: './app/component/template/actualstate.template.html',
styleUrls: ['./app/component/style/actualstate.style.css'],
pipes: [MomentPipe, CapitalizePipe]
})
export class ActualStateComponent implements OnInit {
public room: Room;
constructor(private roomService: RoomService) {
roomService.roomSelected$.subscribe(room => this.onRoomSelected(room));
}
onRoomSelected(room: Room) {
this.room = room;
console.log("room", room);
}
}
和其他组件
@Component({
templateUrl: './src/admin/template/admin.template.html',
styleUrls: ['./src/admin/style/admin.style.css'],
providers: [UserService]
})
export class AdminComponent{
constructor ( private roomService: RoomService) {
}
onClick () {
this.roomService.selectRoom("","");
this.router.navigate(['ActualState']);
}
}
}
,这项服务:
@Injectable()
export class RoomService {
private route_room = "public/mock/room.json";
public roomSelected$: EventEmitter<Room>;
constructor (private http: Http) {
this.roomSelected$ = new EventEmitter();
}
public selectRoom (subdomain: string, id: string) {
// pick the right room
let room = ...
this.roomSelected$.emit(room);
}
private handleError (error: Response) {
return Observable.throw(error.json().error || 'Server error');
}
}
这个模板:
<div class="actual-state" *ngIf="room">
<h3>Salle {{ room.name }}
</h3>
</div>
目的是: 管理组件(用户点击某个按钮) - &GT;监听器OnClick调用服务roomService上的方法 - &GT; roomService发出一个事件(即公共的) - &GT; appComponent听这个事件(.subscribe)
我不知道为什么这不起作用。即使console.log(会议室)在控制台中显示某些内容,<h3>
也永远不会显示..
此数据绑定如何工作? 因为它看起来只是数据不是双向绑定 ...
编辑:我理解这个问题,它与我所做的路由有关。 实际上我并不理解当你改变路线时路线的组成部分被破坏的事实答案 0 :(得分:2)
我猜您需要订阅
return this.http.get(this.route_room)
.map(res => res.json())
.do(data => {
this.roomSelected$.emit(data);
})
.subscribe(value => {})
.catch(this.handleError);