Angular 2將對象傳遞給組件

Question

我正在嘗試將對象傳遞給另一個組件。

請求list.html

<tr [routerLink]="['Request', { id: request.id }]" *ngFor="let request of requests" [req]="request">
                        <td class=" ">{{ request.datum }}</td>
                        <td class=" ">{{ request.artist.name }} </td>
                        <td class=" ">{{ request.artist.user.first_name }}
                        <td class=" ">{{ request.user.first_name }}</td>
                        <td class=" ">{{ request.duration.price }}</td>
                        <td class=" ">{{ request.created_at }}</td>
                        <td class=" ">{{ request.rejected_at }}</td>
                    </tr>

RequestListComponent

import {Component} from '@angular/core';
import {Service} from './../services/service.service';
import {Request} from './../classes/request';
import {RouteConfig, ROUTER_DIRECTIVES} from '@angular/router-deprecated';
import {RequestComponent} from './request.component';

@Component({
  directives: [ROUTER_DIRECTIVES, RequestComponent],
  templateUrl: 'partials/request-list.html'
})

export class RequestListComponent {
  requests: Request[];
  constructor(private _Service: Service) {}

  ngOnInit(){
    this._Service.getRequests().subscribe(data => this.requests = data);
  }
}

RequestComponent

import {Component, Input} from '@angular/core';
import {Service} from './../services/service.service';
import {Request} from './../classes/request';


@Component({
  templateUrl: 'partials/request.html'
})

export class RequestComponent {
  @Input() req: Request;

  constructor(private _Service: Service) {}
}

但是我收到錯誤：“無法綁定到'req'，因為它不是已知的本機屬性”

我究竟做錯了什么？

Answer 1

正如我在我的評論中提到，您不能使用@Input()如果你的RequestComponent裝有Router 。 遺憾的是，無法使用RouteLink -Directive傳遞RouteData 。

為了解決這個問題，我將從服務中加載RequestComponent的Request ，用於加載Requests列表。 要減少后端的流量，如果有的話，可以構建一些緩存機制。

export class RequestComponent {
    req: Request;

    constructor(private _Service: Service, routeParams : RouteParams) {
        this.req = _Service.getRequestById(routeParams.get('id'));
    }
}