如何在 Angular 中实现多级路由? [英] How to implement multi-level routing in Angular?

问题描述

我正在做我的一个小项目，以便更多地了解 Angular，但我真的不知道如何实现多级路由.

我已阅读关于新版本的

让我们考虑我的应用程序的组件如下:

ma​​in.ts

import { bootstrap } from '@angular/platform-b​​rowser-dynamic';import { MyAppComponent } from './my-app/my-app.component';从'./my-app/my-app.routes'导入{APP_ROUTER_PROVIDERS}；引导程序(MyAppComponent，[ APP_ROUTER_PROVIDERS ]).catch(err => console.error(err));

my-app.component.ts

import { Component } from '@angular/core';从'@angular/router' 导入 { ROUTER_DIRECIVES };@成分({选择器:'我的应用'，模板:'<路由器插座></路由器插座>'，指令:[ROUTER_DIRECIVES]，})导出类 MyAppComponent { }

my-app.routes.ts

import { provideRouter, RouterConfig } from '@angular/router';从 './home/home.component' 导入 { HomeComponent };从 './login/login.component' 导入 { LoginComponent };import { SignUpComponent } from './sign-up/sign-up.component';从 './admin/admin.routes' 导入 { AdminRoutes}；导出常量路由:RouterConfig = [{ 路径:''，组件:HomeComponent }，{ 路径:'登录'，组件:LoginComponent }，{ 路径:'注册'，组件:SignUpComponent }，...管理路由，];出口const APP_ROUTER_PROVIDERS = [提供路由器(路线)];

admin.component.ts

import { Component } from '@angular/core';从'@angular/router' 导入 { ROUTER_DIRECIVES };@成分({选择器:'管理员'，模板:'你好，我是管理员 <br><路由器插座></路由器插座>',指令:[ROUTER_DIRECIVES]})导出类 AdminComponent { }

admin.routes.ts

import { RouterConfig } from '@angular/router';从 './admin.component' 导入 { AdminComponent };import { MainPageComponent } from './main-page/main-page.component';从 './settings/settings.component' 导入 { SettingsComponent };导出 const AdminRoutes:RouterConfig = [{路径:'管理员'，组件:管理组件，孩子们: [{ path: 'main-page', 组件: MainPageComponent },{路径:'设置'，组件:设置组件}，]}];

ma​​in-page.component.ts

import { Component } from '@angular/core';@成分({选择器:'主页'，模板:你好，我是主页！！！"})导出类 MainPageComponent { }

settings.component.ts

import { Component } from '@angular/core';@成分({选择器:'设置'，模板:'你好，我是 SETTINGS!!!'})导出类 SettingsComponent { }

当我尝试使用这样的配置时，没有任何效果，并且浏览器的控制台充满了错误.

只有当我在 admin.routes.ts 中添加 children[...] 时才会发生这种情况，并且我认为问题出在那里.

1. 你能给我一些关于如何正确实施的提示吗?
2. 我错过了什么吗?
3. 有更好的方法吗?

在此先感谢您的帮助，我希望我在帖子中所写的内容对理解我的问题有所帮助！

解决方案

Angular 路由器将带有子级的路由视为非终端路由，路由只发生在终端路由上.Angular 路由器期望路由具有 path: '' 的默认条目.

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.

export const AdminRoutes: RouterConfig = [{路径:'管理员'，组件:管理组件，孩子们: [{ path: '', redirectTo: 'main-page', 终端: 'true' },{ 路径:'主页面'，组件:MainPageComponent，{路径:'设置'，组件:设置组件}，]}];

如果使用 rc4 和路由器 3.0.0-beta2，他们已将 terminal 重命名为 pathMatch.所以更新重定向路由如下:

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

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.

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.

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

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 { }

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

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

1. Could you give me any hint on how I can implemented properly, please?
2. Am I missing anything?
3. Is there a better way?

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

解决方案

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: ''.

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 },
    ]
 }];

Edit: 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'},

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