角度2可以通过路线参数传递物体吗？

Question

我可以使用一些建议如何解决我面临的这个问题.为了向您解释这一点,我创建了一个主要组件:

@Component({
selector: 'main-component',
providers: [...FORM_PROVIDERS, MainService, MainQuoteComponent],
directives: [...ROUTER_DIRECTIVES, CORE_DIRECTIVES, RouterOutlet, MainQuoteComponent ],
styles: [`
    agent {
        display: block;
    }
`],
pipes: [],
template: `
   **Html hidden**
  `,
  bindings: [MainService],
})

@RouteConfig([
    { path: '/', name: 'Main', component: MainMenuComponent, useAsDefault: true },
    { path: '/passenger', name: 'Passenger', component: PassengerComponent },
])

@Injectable()
export class MainComponent {

bookingNumber: string;
reservation: Reservation;
profile: any;

constructor(params: RouteParams, public mainService: MainService) {

    this.bookingNumber = params.get("id");

     this.mainService.getReservation(this.bookingNumber).subscribe((reservation) => {

        this.reservation = reservation;
    });

    this.profile = this.mainService.getUserDetails();

} 

}

该组件从api中检索预订并将其保存在您看到的预订对象中(它有一种预订类型,类似于此类)

export class Reservation {

constructor(
    public Id: number,
    public BookingNumber: string,
    public OutboundDate: Date,
    public ReturnDate: Date,
    public Route: string,
    public ReturnRoute: string,
    public Passengers: string,
    public Pet: string,
    public VehicleType: string,
    public PassengersList: Array<Passengers>

) { }
}

当我单击按钮Passenger时,它将重定向到乘客页面Main/passenger,但是这里我需要发送预订对象(整个)或PassengerList(数组).

有没有人知道它是否可以用路由参数或路由器插座来做到这一点？有什么建议？

Answer 1

只需使用共享服务并将其添加到providers: [...]父组件即可.

简单的服务类

@Injectable()
export class ReservationService {
  reservation:Reservation;
}

在父级中将其添加到提供程序并将其注入构造函数中

@Component({...
   providers: [ReservationService]
export class Parent {
  constructor(private reservationService:ReservationService) {}

  someFunction() {
    reservationService.reservation = someValue;
  }
}

在子组件中只注入它(不要添加到提供者)

@Component({...
  providers: []
export class Passenger {
  constructor(private reservationService:ReservationService) {
    console.log(reservationService.reservation);
  }

  someFunction() { 
    reservationService.reservation = someValue;
  }
}

更新

bootstrap()是一切的共同祖先和有效的选择.这取决于您的具体要求.如果在组件上提供它,则此组件将成为共享单个实例的树的根.这样您就可以指定服务的范围.如果范围应该是"您的整个应用程序",则提供它bootstrap()或根组件.Angular2风格指南鼓励支持providers根组件bootstrap().结果将是相同的.如果您只想在组件A和添加到其中的其他组件之间进行通信,<router-outlet>那么将范围限制为此组件是有意义的A.