Angular 2 rc1 中的 RouteParams

Question

我一直在试用 Angular 2 自 beta 版以来，现在有了 rc.0+，一些事情发生了变化。

其中之一是无法从@angular/router 导入的 RouteParams。当我尝试使用 @angular/router-deprecated 时，我收到一条错误消息：

ORIGINAL EXCEPTION: No provider for RouteParams!

app.component:

@Routes([
  { path: '/', component: StartComponent },
  {path: '/:projId/:userName', component: ProjectListComponent},
  { path: '*', component: StartComponent },
])

项目-list.component:

import {Component, OnInit} from '@angular/core';
import {RouteParams} from '@angular/router-deprecated';

@Component({
  ...
})
export class ProjectListComponent implements OnInit {
  userName:string;
  projId:string;

  constructor(private params:RouteParams) {
    this.userName = params.get('userName');
    this.projId = params.get('projId');
  }
}

我现在在哪里可以导入 RouteParams，还是我做错了什么？

谢谢！

Answer 1

一种方法是

  routerOnActivate(curr: RouteSegment) {
    this.userName = curr.getParam('userName');
    this.projId = curr.getParam('projId');
  }

Answer 2

你必须使用 RouteSegment 而不是在 angular2 RC 中使用 RouteParams。像这样：-

import { Component } from '@angular/core';

import { Routes, RouteSegment, ROUTER_DIRECTIVES } from '@angular/router';

@Component({

  selector: 'about-item',

  template: `<h3>About Item Id: {{id}}</h3>`

})

class AboutItemComponent { 

  id: any;

  constructor(routeSegment: RouteSegment) {

    this.id = routeSegment.getParam('id');

  }
}

@Component({

    selector: 'app-about',

    template: `

      <h2>About</h2>
        <a [routerLink]="['/about/item', 1]">Item 1</a>
        <a [routerLink]="['/about/item', 2]">Item 2</a>
      <div class="inner-outlet">
        <router-outlet></router-outlet>
      </div>
    `,
    directives: [ROUTER_DIRECTIVES]
})

@Routes([

  { path: '/item/:id', component: AboutItemComponent }

])

export class AboutComponent { }

Angular 2 rc1 中的 RouteParams

RouteParams in Angular 2 rc1

javascript

angular

angular2-routing