There seems to be an issue with the router and canActivate class in Angular 2.0.1. The LoginGuard is not functioning properly and

I am currently facing an issue with the latest versions of Angular 2 (2.0.1) and angular router : 3.0.1

Upon running the application, I encounter the following error message: Error: (SystemJS) No Directive annotation found on LoginGuard(…)

The problem lies within a router that uses a canActivate class to control access to routes. Below is the code snippet :

import { ModuleWithProviders } from '@angular/core';
import { Routes, RouterModule  } from '@angular/router';
export const MainWindowRoutes = [
  {
    path: '',
    redirectTo: '/web-portal',
    pathMatch: 'full'
  },
  // Include more route definitions here...
];
// Remaining code snippets...

The LoginGuard class is crucial for handling user authentication before accessing certain routes. The implementation of this class can be seen below :

import { Injectable } from '@angular/core';
import { 
    CanActivate,
    Router,
    ActivatedRouteSnapshot,
    RouterStateSnapshot } from '@angular/router';
// More imports and class definition...

In my app.module file, I initiate the router as follows :

// Code snippet showing how the router is initialized

Unfortunately, the injection process does not seem to work properly for the canActivate class (LoginGuard).

If anyone has insights or solutions to this issue, please share them! 😊

Thank you!

Answer №1

Great news, it's finally functioning properly.

I realized that I forgot to include this in app.module:

providers : [ AUTH_ROUTER_PROVIDERS, appRoutingProviders,...

Oops, that was a silly oversight on my part. Sometimes when we refactor code, it ends up becoming more complicated. Perhaps having all providers in app.module isn't the best approach... Thank you for your assistance.

Answer №2

There seems to be an issue with the bootstrap line in your code snippet, it should resemble the following:

@NgModule({
  imports: [BrowserModule, ModuleWithProviders],
  providers: [AUTH_ROUTER_PROVIDERS],
  bootstrap: [AppComponent],
  ...
}
export class AppModule {}
// Importing the browser platform and compiler
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';

// The module for the app
import { AppModule } from './app.module';

// Compiling and launching the module
platformBrowserDynamic().bootstrapModule(AppModule);

For more information, please refer to:

Answer №3

Another important point to consider, apart from @Gunter's response, is ensuring you include the necessary import in your NgModule and defining the "routing" property within your code.

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