Angular 5 基于角色的路由

Question

我有一个网站，其主页在我的路由模块中定义为：

const appRoutes: Routes = [
{
  path: '',
  component: HomeComponent
}];

现在我想为管理员用户显示不同的主页（仪表板页面）。 我可以更改根据用户角色调用的“组件”吗？

伪代码如下：

const appRoutes: Routes = [
{
  path: '',
  IF UserRole = 'Admin'
     component: DashboardComponent
  ELSE
     component: HomeComponent
}];

Answer 1

@andrea06590 答案中的教程链接非常简短地概述了基于身份验证和授权的路由。 简而言之，有人可以使用以下方式：

使用 canActivate 属性并向其传递一个实现 CanActivate 接口的服务类。
使用数据对象属性将角色传递给 AuthGuard 服务。

app.routing.module.ts

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
const routes: Routes = [
  { path : ''  , redirectTo : '', pathMatch: 'full' , canActivate : [ RedirectGuardService ] },
  { path : 'admin' , component : AdminComponent , canActivate : [AuthGuardService] , data : { role : 'admin'}},
  { path : 'user' , component : UserComponent , canActivate : [AuthGuardService] , data : { role : 'user'}}
  { path : '**' , component : NotFoundComponent }
];
@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

auth-guard.service.ts

import { Injectable } from '@angular/core';
import { Router , CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
import { Observable } from 'rxjs';
import { AuthService } from '../auth-service/auth-service.service';

@Injectable({
  providedIn: 'root'
})
export class AuthGuardService implements CanActivate {
  constructor(
      private router: Router,
      private authService: AuthService
  ) {}

  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot) : Observable<boolean> | Promise<boolean> | boolean {
    const currentUser = this.authService.userVal; // Getting User Value by decoding JWT Token
    const role        = route.data.role; // Getting role value which we passed to data object in router configuration
    if (currentUser) {      
      if(role && role.indexOf(currentUser.role) > -1)
        return true;          
      else 
        return false;          
    }
    return false;
  }
}

重定向-guard.service.ts

import { Injectable } from '@angular/core';
import { CanActivate, Router, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
import { AuthService } from '../auth-service/auth-service.service';
import { Observable } from 'rxjs';
import { IUser } from 'client/app/interfaces';

@Injectable({
  providedIn: 'root'
})
export class RedirectGuardService implements CanActivate {
  constructor(
      private router: Router,
      private authService: AuthService
  ) {}

  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot) : Observable<boolean> | Promise<boolean> | boolean {
    const user = <IUser>this.authService.userVal;
    if (user && user['user']) {      
      this.router.navigate(['/'+ user['user'].role]);
      return true;      
    }      
    this.router.navigate(['/login'], { queryParams: { returnUrl: state.url }});
    return false;
  }
}

Answer 2

为此，有一种称为 Angular Guards Route 的东西

https://medium.com/@ryanchenkie_40935/angular-authentication-using-route-guards-bf7a4ca13ae3

Answer 3

您一定会在此页面上找到您需要的东西：

https://angular.io/guide/router

但是作为一个快速而肮脏的答案，您可以检查用户是否是 HomeComponent 中的管理员，如果是则重定向他。