使用 child 从 parent 获取 routerParams 发送

Question

我有一个组件有 @Routeconfig（parent）。

import {Component} from "angular2/core";
import {RouteConfig,ROUTER_DIRECTIVES, RouterOutlet} from 'angular2/router';
import {Theme} from "../theme/theme";
import {Router,RouteParams} from "angular2/router";
import {OrganisationService} from "./organisation.service";
import {Organisation} from "./organisation";
import {OrganisationComponent} from "./organisation.component";
import {EmptyComponent} from "../../empty.component";
import {ThemeListComponent} from "../theme/theme-list.component";

@Component({
    template: `
<div class="container">
    <ul>
        <li *ngFor="#organisation of organisations">
             <a [routerLink]="['./ThemeList',{ organisationId: organisation.organisationId }]" >{{organisation.organisationName}}</a>
        </li>
    </ul>
</div>
<router-outlet></router-outlet>
  `,
    directives:[RouterOutlet],
    providers:[OrganisationService]
})

@RouteConfig([
    {path: '/', name:'Empty', component:EmptyComponent,useAsDefault: true},
    {path: '/:organisationId/Themes/...', name:'ThemeList', component:ThemeListComponent}
])

export class OrganisationListComponent {
    public organisations:Organisation[];
    constructor(private organisationService:OrganisationService) {
        this.organisationService.getOrganisations().subscribe((organisations:Organisation[])=> {
            this.organisations = organisations;
        });
    }
}

我想将 ID 从组织发送到我的 ThemeListComponent (child)。这有效，但是当我尝试使用我的 child 组件获取 routeParams 时，它会出错。

EXCEPTION: Error during instantiation of Router! (RouterLink -> Router).

ORIGINAL EXCEPTION: Route config should contain exactly one "component", "loader", or "redirectTo" property.

这是 ThemeListComponent 以及我如何尝试接收 routerParams：

import {Component} from "angular2/core";
import {RouteConfig,ROUTER_DIRECTIVES, RouterOutlet} from 'angular2/router';
import {Theme} from "../theme/theme";
import {Router,RouteParams} from "angular2/router";
import {ThemeComponent} from "../theme/theme.component";
import {ThemeService} from "./theme.service";
import {EmptyComponent} from "../../empty.component";

@Component({
    template: `
<div class="container">
  <ul>
     <li *ngFor="#theme of themes">
        <a [routerLink]="['./Theme',{ themeId: theme.themeId }]">{{theme.name}}</a>
    </li>
  </ul>
</div>
<router-outlet></router-outlet>
    `,
    directives:[RouterOutlet,RouteParams],
    providers:[ThemeService]
})

@RouteConfig([
    {path: '/', name:'Empty', component:EmptyComponent,useAsDefault: true},
    {path: '/:themeId', name:'Theme', component:ThemeComponent}
])

export class ThemeListComponent {
    public themes:Theme[];
    constructor(private themeService:ThemeService,private routeParams:RouteParams) {
        let id = +this.routeParams.get('id');
        this.themeService.getThemes(id).subscribe((themes:Theme[])=>{
            this.themes = themes;
        });
    }
}

每当我在 child 的构造函数中实现 routerParams 时，我都会收到错误消息。

Answer 1

目前没有简单的方法。另见 https://github.com/angular/angular/issues/6985

提供了一些解决方法。

Answer 2

我遇到了类似的问题。我通过简单地在与 RouteConfig, ROUTER_DIRECTIVES, RouterOutlet.

相同的行中导入 RouteParams 和 Router 来解决它

这可能会给您一个错误。所以我改变了

import {RouteConfig,ROUTER_DIRECTIVES, RouterOutlet} from 'angular2/router';
import {Router,RouteParams} from "angular2/router";

至

import {RouteConfig,ROUTER_DIRECTIVES, RouterOutlet, Router,RouteParams} from 'angular2/router';

我不明白为什么这对两个单独的导入不起作用，但这应该可以解决问题。

使用 child 从 parent 获取 routerParams 发送

Getting routerParams send from parent with child

typescript

angular

angular2-routing