[Angular2 Router] Use Params from Angular 2 Routes Inside of Components-优快云博客

本文介绍如何使用Angular2的ActivatedRoute获取当前路由的详细信息，并通过示例展示了如何映射所需的参数并显示在模板中。

Angular 2’s ActivatedRoute allows you to get the details of the current route into your components. Params on the ActivatedRoute are provided as streams, so you can easily map the param you want off of the stream and display it in your template.

For example we have a HerosComonent, and inside HerosComponent, we will have multi HeroComponent:

heros.component.html:

<ul>
  <li>
    <a [routerLink]="'1'"
       routerLinkActive="active"
       [routerLinkActiveOptions]="{exact: true}">Hero 1</a>
  </li>
</ul>

heros.routers.ts:

import {HerosComponent} from "./heros.component";
import {RouterModule} from "@angular/router";
import {HeroComponent} from "./hero/hero.component";
const routes = [
  {path: '', component: HerosComponent},
  {path: ':id', component: HeroComponent},
];
export default RouterModule.forChild(routes)

hero.component.ts:

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

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

  id;
  constructor(private router: ActivatedRoute) {
    this.id = router.params.map((p:any) => p.id);
  }

  ngOnInit() {
  }

}

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