如何在Angular中实现多级路由?

问题描述

我正在研究我的一个小项目，以了解有关Angular的更多信息，但是我真的无法弄清楚如何实现多层路由.

I'm working on a little project of mine in order to learn something more about Angular, but I really cannot figure out how to implement a multi-leveled routing.

我已阅读有关新版本的文档.路由器组件以及StackOverlfow上的其他一些主题(第一，第二，)，但我找不到解决问题的方法.

I've read the documentation about the new release of the Router Component and also some other topics on StackOverlfow (first, second, third), but I cannot find a solution to my problem.

让我们考虑以下应用结构，而不考虑 Test 和 Test2 块.

Let's consider the following app structure, without considering the Test and Test2 blocks.

让我们考虑一下我的应用程序的组成部分:

And let's consider the components of my app as following:

main.ts

import { bootstrap }    from '@angular/platform-browser-dynamic';

import { MyAppComponent } from './my-app/my-app.component';
import { APP_ROUTER_PROVIDERS } from './my-app/my-app.routes';

bootstrap(MyAppComponent, [ APP_ROUTER_PROVIDERS ])
    .catch(err => console.error(err));

my-app.component.ts

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

@Component({
    selector: 'my-app',
    template: '<router-outlet></router-outlet>',
    directives: [ROUTER_DIRECTIVES],
})

export class MyAppComponent { }

my-app.routes.ts

import { provideRouter, RouterConfig } from '@angular/router';

import { HomeComponent } from './home/home.component';
import { LoginComponent } from './login/login.component';
import { SignUpComponent } from './sign-up/sign-up.component';

import { AdminRoutes} from './admin/admin.routes';

export const routes: RouterConfig = [
  { path: '', component: HomeComponent },
  { path: 'login', component: LoginComponent },
  { path: 'sign-up', component: SignUpComponent },
  ...AdminRoutes,
];

export const APP_ROUTER_PROVIDERS = [
    provideRouter(routes)
];

admin.component.ts

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

@Component({
    selector: 'admin',
    template: 'Hello I am ADMIN <br> <router-outlet></router-outlet>',
    directives: [ROUTER_DIRECTIVES]
})

export class AdminComponent { }

admin.routes.ts

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

import { AdminComponent } from './admin.component';
import { MainPageComponent } from './main-page/main-page.component';
import { SettingsComponent } from './settings/settings.component';

export const AdminRoutes: RouterConfig = [
  {
      path: 'admin',
      component: AdminComponent,
      children: [
        { path: 'main-page', component: MainPageComponent },
        { path: 'settings', component: SettingsComponent },
      ]
  }
];

main-page.component.ts

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

@Component({
    selector: 'main-page',
    template: 'Hello I am MAIN PAGE!!!'
})

export class MainPageComponent { }

settings.component.ts

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

@Component({
    selector: 'settings',
    template: 'Hello I am SETTINGS!!!'
})

export class SettingsComponent { }

当我尝试使用这样的配置时，任何操作都不再起作用，并且浏览器的控制台中充满了错误.

When I try to use such a configuration nothing works anymore and the browser's console is full of errors.

只有当我在 admin.routes.ts 中添加孩子[...] 时，才会发生这种情况，而我认为问题就出在这里.

This happens only when I add the children[...] in the admin.routes.ts, and I think the problems come in there.

1. 能否请您提示我如何正确实施?
2. 我想念什么吗?
3. 有更好的方法吗?

在此先感谢您的帮助，希望本文所写内容对理解我的问题有所帮助！

Thank you in advance for your help and I hope what I've written in the post it's helpful to understand my issue!

推荐答案

角度路由器将带有子级的路由视为非终端路由，并且路由仅发生在终端路由上. Angular路由器希望路由具有path: ''的默认条目.

Angular router considers a route with children as a non-terminal route and routing happens to terminal routes only. Angular router expects route to have a default entry for path: ''.

要解决此问题，您应该添加从父路由到子路由之一的重定向.

To resolve this issue you should add a redirect from the parent route to one of the child routes.

export const AdminRoutes: RouterConfig = [
{
    path: 'admin',
    component: AdminComponent,
    children: [
        { path: '', redirectTo: 'main-page', terminal: 'true' },
        { path: 'main-page', component: MainPageComponent,
        { path: 'settings', component: SettingsComponent },
    ]
 }];

如果使用rc4和路由器3.0.0-beta2，则它们已将terminal重命名为pathMatch.因此，如下更新重定向路由:

if using rc4 and router 3.0.0-beta2 they have renamed terminal to pathMatch. So update the redirect route as below:

{ path: '', redirectTo: 'main-page', pathMatch: 'full'},

这篇关于如何在Angular中实现多级路由?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！