javascript - 如何在 Angular2 rc5 中获取路由参数？

Question

我使用 Angular2 RC5 通过路由器获取一个简单的参数。参数只是一个名称。在 app.routes.ts 中，我将路由参数设置为“directory/:ninja”。

app.routes.ts

import { Routes, RouterModule } from "@angular/router";
import { DirectoryComponent } from "./directory/directory.component";
import { HomeComponent } from "./home/home.component";

const APP_ROUTES: Routes = [

    { path: 'directory/:ninja', component: DirectoryComponent },
    { path: '', component: HomeComponent }

];

export const APP_ROUTES_PROVIDER = RouterModule.forRoot(APP_ROUTES);

directory.component.ts

import { Component, OnInit } from '@angular/core';
import { ActivatedRoute } from '@angular/router';

@Component({
  selector: 'app-directory',
  templateUrl: './directory.component.html',
  styleUrls: ['./directory.component.css']
})
export class DirectoryComponent implements OnInit {

  ninja: string;    

  constructor(public route: ActivatedRoute) { 

    this.ninja = route.snapshot.params['ninja'];

  }

  ngOnInit() {
  }

}

directory.component.html

{{ninja}}

每当我访问http://localhost:4200/directory/richard时，它将我重定向到 ROOT URL。理查德是忍者的名字。

它应该在directory.component.ts中显示忍者的名字

Answer 1

1) 导入

import {ActivatedRoute} from '@angular/router';

2) 构造函数

constructor(private route:ActivatedRoute,.......

3) 订阅

this.route.params.subscribe(params => {
  console.log('Param whatever: ', params['whatever']);
  this.whatever = params['whatever'];
});