Angular Routes Issue/ routes not considering my token conditioning

Angular Routes Issue: Routes not considering my token conditioning

When working with Angular, you may encounter an issue where the routes in your application are not considering your token conditioning. This can lead to unexpected behavior and can be quite frustrating to debug. In this blog post, we will explore different solutions to this problem.

Solution 1: Using Route Guards

One way to solve this issue is by using route guards. Route guards allow you to control the navigation to and from a route based on certain conditions. In this case, we can use a route guard to check if the user has a valid token before allowing access to the route.

Here’s an example of how you can implement a route guard in your Angular application:

import { Injectable } from '@angular/core';
import { CanActivate, Router } from '@angular/router';

@Injectable()
export class TokenGuard implements CanActivate {
  constructor(private router: Router) {}

  canActivate(): boolean {
    const token = localStorage.getItem('token');

    if (token) {
      // Token is valid, allow access to the route
      return true;
    } else {
      // Token is not valid, redirect to login page
      this.router.navigate(['/login']);
      return false;
    }
  }
}

To use the route guard, you need to add it to the route configuration in your app.module.ts file:

import { TokenGuard } from './guards/token.guard';

const routes: Routes = [
  { path: 'dashboard', component: DashboardComponent, canActivate: [TokenGuard] },
  // Other routes...
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule],
  providers: [TokenGuard]
})
export class AppModule { }

With this implementation, whenever a user tries to access the ‘/dashboard’ route, the TokenGuard will be invoked. If the user has a valid token, they will be allowed to access the route. Otherwise, they will be redirected to the login page.

Solution 2: Custom Route Matcher

If you have more complex token conditioning requirements, you can also use a custom route matcher. This allows you to define your own logic for matching routes based on certain conditions.

Here’s an example of how you can implement a custom route matcher in your Angular application:

import { UrlSegment, UrlMatchResult, UrlMatcher } from '@angular/router';

export function tokenMatcher(url: UrlSegment[]): UrlMatchResult {
  const token = localStorage.getItem('token');

  if (token && url.length > 0 && url[0].path === 'dashboard') {
    // Token is valid and the route matches the condition, return a successful match
    return { consumed: url };
  } else {
    // Token is not valid or the route does not match the condition, return a failed match
    return null;
  }
}

To use the custom route matcher, you need to add it to the route configuration in your app.module.ts file:

const routes: Routes = [
  { matcher: tokenMatcher, component: DashboardComponent },
  // Other routes...
];

With this implementation, the tokenMatcher function will be invoked for every route. If the token is valid and the route matches the condition, the route will be considered a successful match. Otherwise, it will be considered a failed match.

By using either the route guard or the custom route matcher, you can ensure that your routes consider your token conditioning and provide the desired behavior in your Angular application.

I hope this blog post has helped you understand how to solve the issue of routes not considering your token conditioning in Angular. If you have any further questions, please feel free to leave a comment below.

Happy coding!

Angular Routes Issue/ routes not considering my token conditioning