Angular2 - 没有 LoggedInGuard 的提供者

Question

我正在制作 Anuglar2 rc-4 网络应用程序。我正在尝试限制路由，但是当我添加我的登录守卫时，它告诉我没有提供程序。我的正常登录服务代码工作正常，就在我尝试添加登录守卫和 canActive 路由时。关于如何解决此错误的任何想法？

routes.ts

import { RouterConfig } from '@angular/router';
import { Home } from './components/home/home';
import { Login } from './components/login/login';
import { DashBoard } from './components/dashboard/dashboard';
import { User } from './components/user/user';
import { Store } from './components/store/store';
import { LoggedInGuard } from './models/logged-in.guard.ts'; 

export const routes: RouterConfig = [
    { path: '', redirectTo: 'home', pathMatch: 'full' },
    { path: 'home', component: Home, canActivate: [LoggedInGuard] },
    { path: 'login', component: Login },
    { path: 'dashboard', component: DashBoard },
    { path: 'user', component: User },
    { path: 'store', component: Store },
    { path: '**', redirectTo: 'home' }
];

boot.ts

import { bootstrap } from '@angular/platform-browser-dynamic';
import { FormBuilder } from '@angular/common';
import { provideRouter } from '@angular/router';
import { HTTP_PROVIDERS, JSONP_PROVIDERS } from '@angular/http';
import { App } from './components/app/app';
import { routes } from './routes';

bootstrap(App, [
    HTTP_PROVIDERS,
    FormBuilder,
    provideRouter(routes)
]);

记录-in.guard.ts

import { Injectable } from '@angular/core';
import { Router, CanActivate } from '@angular/router';
import { LoginService } from '../services/login.service';

@Injectable()
export class LoggedInGuard implements CanActivate {
  constructor(private ls: LoginService) {}

  canActivate() {
    return this.ls.isLoggedIn();
  }
}

Answer 1

您必须将 LoggedInGuard 服务注入您的应用程序 bootstrap 函数

bootstrap(App, [
    HTTP_PROVIDERS,
    FormBuilder,
    provideRouter(routes),
    LoggedInGuard // injected LoggedInGuard service provider here
]);

Note: This answer would not be the same for the current angular 2 updated version(rc.6), When you upgrade you need to create a NgModule where you are going to wrap up all the dependencies in single place, that time LoggedInGuard will go inside providers option of `NgModule

`