我正在寻找在我的AppComponent中检测路由变化。
然后,我将检查全局用户令牌,以查看用户是否已登录,以便在用户未登录时重定向该用户。
我正在寻找在我的AppComponent中检测路由变化。
然后,我将检查全局用户令牌,以查看用户是否已登录,以便在用户未登录时重定向该用户。
当前回答
路由器3.0.0-beta。2应该是
this.router.events.subscribe(path => {
console.log('path = ', path);
});
其他回答
下面的方法可以帮你解决棘手的问题。
// in constructor of your app.ts with router and auth services injected
router.subscribe(path => {
if (!authService.isAuthorised(path)) //whatever your auth service needs
router.navigate(['/Login']);
});
不幸的是,这在路由过程中比我想要的晚些时候重定向。在重定向之前调用原始目标组件的onActivate()。
你可以在目标组件上使用@CanActivate装饰器,但这是a)不集中的,b)不能从注入的服务中受益。
如果有人能提出一种更好的方法,在路由提交之前对其进行集中授权,那就太好了。我相信一定有更好的办法。
这是我当前的代码(我如何改变它来监听路由变化?):
import {Component, View, bootstrap, bind, provide} from 'angular2/angular2';
import {ROUTER_BINDINGS, RouterOutlet, RouteConfig, RouterLink, ROUTER_PROVIDERS, APP_BASE_HREF} from 'angular2/router';
import {Location, LocationStrategy, HashLocationStrategy} from 'angular2/router';
import { Todo } from './components/todo/todo';
import { About } from './components/about/about';
@Component({
selector: 'app'
})
@View({
template: `
<div class="container">
<nav>
<ul>
<li><a [router-link]="['/Home']">Todo</a></li>
<li><a [router-link]="['/About']">About</a></li>
</ul>
</nav>
<router-outlet></router-outlet>
</div>
`,
directives: [RouterOutlet, RouterLink]
})
@RouteConfig([
{ path: '/', redirectTo: '/home' },
{ path: '/home', component: Todo, as: 'Home' },
{ path: '/about', component: About, as: 'About' }
])
class AppComponent {
constructor(location: Location){
location.go('/');
}
}
bootstrap(AppComponent, [ROUTER_PROVIDERS, provide(APP_BASE_HREF, {useValue: '/'})]);
在Angular 8中,你应该这样做。router.events。订阅((事件:事件)=> {})
例子:
import { Component } from '@angular/core';
import { Router, Event } from '@angular/router';
import { NavigationStart, NavigationError, NavigationEnd } from '@angular/router';
@Component({
selector: 'app-root',
template: `<router-outlet></router-outlet>`
})
export class AppComponent {
constructor(private router: Router) {
//Router subscriber
this.router.events.subscribe((event: Event) => {
if (event instanceof NavigationStart) {
//do something on start activity
}
if (event instanceof NavigationError) {
// Handle error
console.error(event.error);
}
if (event instanceof NavigationEnd) {
//do something on end activity
}
});
}
}
在Angular 10中,你可以像下面这样做……
import { Component, OnInit } from '@angular/core';
import { Router, NavigationEnd } from '@angular/router';
import { filter } from 'rxjs/operators';
@Component({
selector: 'app-my-class',
templateUrl: './my-class.component.html',
styleUrls: ['./my-class.component.scss']
})
export class MyClassComponent implements OnInit {
constructor(private router: Router) {}
ngOnInit(): void {
this.router.events
.pipe(filter(event => event instanceof NavigationEnd))
.subscribe((event: NavigationEnd) => {
// code goes here...
});
}
}
RxJS 6
router.events.pipe(filter(event => event instanceof NavigationStart))
感谢Peilonrayz(见下面的评论)
new router >= RC.3
import { Router, NavigationStart, NavigationEnd, NavigationError, NavigationCancel, RoutesRecognized } from '@angular/router';
constructor(router:Router) {
router.events.forEach((event) => {
if(event instanceof NavigationStart) {
}
// NavigationEnd
// NavigationCancel
// NavigationError
// RoutesRecognized
});
}
你也可以通过给定的事件进行过滤:
import 'rxjs/add/operator/filter';
constructor(router:Router) {
router.events
.filter(event => event instanceof NavigationStart)
.subscribe((event:NavigationStart) => {
// You only receive NavigationStart events
});
}
使用成对操作符来获取先前和当前事件也是一个不错的想法。https://github.com/angular/angular/issues/11268#issuecomment-244601977
进口的rxjs /添加/运营商/成对的; import {Router} from '@angular/ Router '; 导出类AppComponent { 构造函数(私有路由器:router) { This.router.events.pairwise ().subscribe((event) => { console.log(事件); }); }; }
在Angular 7中,我用下面的函数解决了在特定页面上启用和禁用导航栏的问题。
首先,您应该导入NavigationEnd
import { NavigationEnd, Router } from '@angular/router';
navbar.component.ts
public isNavbar=false;
ngAfterViewInit() {
// nabar enable / disable function
this.router.events.subscribe((event) => {
if (event instanceof NavigationEnd) {
if(event.url.includes('dashboard')){
this.isNavbar=true;
}else{
this.isNavbar=false;
}
}
});
}
navbar.component.html
<mat-toolbar *ngIf="isNavbar" class="mat-elevation-z1 nav-tool-bar">
<button mat-button routerLink="/dashboard" routerLinkActive="active-list-item"><svg aria-hidden="true" focusable="false" data-prefix="fal" data-icon="paper-plane" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="nav-bar-icon svg-inline--fa fa-paper-plane fa-w-16"><path fill="currentColor" d="M464 4.3L16 262.7C-7 276-4.7 309.9 19.8 320L160 378v102c0 30.2 37.8 43.3 56.7 20.3l60.7-73.8 126.4 52.2c19.1 7.9 40.7-4.2 43.8-24.7l64-417.1C515.7 10.2 487-9 464 4.3zM192 480v-88.8l54.5 22.5L192 480zm224-30.9l-206.2-85.2 199.5-235.8c4.8-5.6-2.9-13.2-8.5-8.4L145.5 337.3 32 290.5 480 32l-64 417.1z" class=""></path></svg>
Campagnes</button>
<button mat-button routerLink="fake" routerLinkActive="active-list-item"><svg aria-hidden="true" focusable="false" data-prefix="fal" data-icon="box-open" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 608 512" class="nav-bar-icon svg-inline--fa fa-box-open fa-w-19"><path fill="currentColor" d="M606.4 143.8L557.5 41c-2.7-5.6-8.1-9-13.9-9C543 32 304 64 304 64S65 32 64.4 32c-5.8 0-11.2 3.5-13.9 9L1.6 143.8c-4.4 9.2.3 20.2 9.6 23l49.5 14.9V393c0 14.7 9.5 27.5 23 31l205.4 54.1c13 3.4 23.7 1.5 29.5 0L524.2 424c13.5-3.6 23-16.4 23-31V181.7l49.5-14.9c9.4-2.8 14-13.8 9.7-23zM73 65.3l180.9 24.3-57.1 99.8-159.9-48.1 36.1-76zm18.2 125.6C208.3 226.1 200.5 224 203.6 224c5.4 0 10.5-2.9 13.3-7.9l71.9-125.5V445L91.2 393V190.9zM516.8 393l-197.6 52V90.5L391.1 216c2.9 5 8 7.9 13.3 7.9 3.1 0-5 2.1 112.4-33.1V393zM411.3 189.3l-57.1-99.8L535 65.3l36.1 76-159.8 48z" class=""></path></svg>
Ressources</button>
<button mat-button routerLink="fake" routerLinkActive="active-list-item"><svg aria-hidden="true" focusable="false" data-prefix="fal" data-icon="life-ring" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="nav-bar-icon svg-inline--fa fa-life-ring fa-w-16"><path fill="currentColor" d="M256 8C119.033 8 8 119.033 8 256s111.033 248 248 248 248-111.033 248-248S392.967 8 256 8zm168.766 113.176l-62.885 62.885a128.711 128.711 0 0 0-33.941-33.941l62.885-62.885a217.323 217.323 0 0 1 33.941 33.941zM256 352c-52.935 0-96-43.065-96-96s43.065-96 96-96 96 43.065 96 96-43.065 96-96 96zM363.952 68.853l-66.14 66.14c-26.99-9.325-56.618-9.33-83.624 0l-66.139-66.14c66.716-38.524 149.23-38.499 215.903 0zM121.176 87.234l62.885 62.885a128.711 128.711 0 0 0-33.941 33.941l-62.885-62.885a217.323 217.323 0 0 1 33.941-33.941zm-52.323 60.814l66.139 66.14c-9.325 26.99-9.33 56.618 0 83.624l-66.139 66.14c-38.523-66.715-38.5-149.229 0-215.904zm18.381 242.776l62.885-62.885a128.711 128.711 0 0 0 33.941 33.941l-62.885 62.885a217.366 217.366 0 0 1-33.941-33.941zm60.814 52.323l66.139-66.14c26.99 9.325 56.618 9.33 83.624 0l66.14 66.14c-66.716 38.524-149.23 38.499-215.903 0zm242.776-18.381l-62.885-62.885a128.711 128.711 0 0 0 33.941-33.941l62.885 62.885a217.323 217.323 0 0 1-33.941 33.941zm52.323-60.814l-66.14-66.14c9.325-26.99 9.33-56.618 0-83.624l66.14-66.14c38.523 66.715 38.5 149.229 0 215.904z" class=""></path></svg>Support</button></mat-toolbar>
navbar.component.scss
.mat-toolbar {
padding-top: 2px;
padding-left: 30px;
background-color: #fff;
}
::ng-deep .nav-tool-bar{
button{
.mat-button-focus-overlay{
opacity: 0!important;
}
.nav-bar-icon{
width: 16px;
}
span{
font-size: 15px;
}
}
.active-list-item{
background-color: #c79652;
span{
color: #fff;
font-size: 15px;
svg{
path{
color: #fff;
}
}
}
}
}
更改SCSS .active-list-item背景色很重要。