How can I create an interceptor in Angular2 to detect 500 and 404 errors in my app.ts file?

Question

How can I create an interceptor in Angular2 to detect 500 and 404 errors in my app.ts file?

Creating an Angular2 Interceptor for Handling 500 and 404 Errors in app.ts

In my app.ts file, I am looking to implement an interceptor that can detect a 500 or 404 error so that I can appropriately redirect to my HTML 404 or HTML 500 pages.

Is this functionality achievable in Angular 2? I have previously implemented this in Angular 1.x.

Will the following code snippet be effective?

    this.router.subscribe((currentRoute, error) => {
        if(error){
             //redirect logic here???
        }

    })

Appreciate your assistance!

typescript angular

Answer 1

Answer №1

This code snippet is employed in my project to direct users to a 404 error page.

@RouteConfig([
    {path:'/tryagain', name: '404', component: NotFoundComponent},
    {path:'/**', redirectTo: ['404']}
])

It's a simple and effective solution. You could also utilize it to redirect users to the home page with a message stating that the requested page cannot be found.

@RouteConfig([
    {path:'/**', redirectTo: ['Home', {error: 'not found'}] }
])

In the Home component, make sure to check for the error routing parameter and handle it appropriately.

Answer 2

This code snippet is employed in my project to direct users to a 404 error page.

@RouteConfig([
    {path:'/tryagain', name: '404', component: NotFoundComponent},
    {path:'/**', redirectTo: ['404']}
])

It's a simple and effective solution. You could also utilize it to redirect users to the home page with a message stating that the requested page cannot be found.

@RouteConfig([
    {path:'/**', redirectTo: ['Home', {error: 'not found'}] }
])

In the Home component, make sure to check for the error routing parameter and handle it appropriately.

Answer 3

Answer №2

Latest Update: RC.3

Within the most recent release of Angular 2.0.0-rc.3, I have incorporated the usage of the '**' path to establish a catch-all route (for instance, to display a 404 error page or redirect users to the default page as provided by the LoginCompinent).

@Routes([
  { path: '',                         component: LoginComponent },
  { path: 'register',                 component: RegisterComponent },
  { path: 'confirm/:value1/:value2',  component: RegisterComponent },
  { path: 'home',                     component: HomeComponent },
  { path: '**',                       component: My404Component }
])

Ensure that this entry always remains at the bottom of your routing configuration:

  { path: '**',                       component: My404Component }

Answer 4

Latest Update: RC.3

Within the most recent release of Angular 2.0.0-rc.3, I have incorporated the usage of the '**' path to establish a catch-all route (for instance, to display a 404 error page or redirect users to the default page as provided by the LoginCompinent).

@Routes([
  { path: '',                         component: LoginComponent },
  { path: 'register',                 component: RegisterComponent },
  { path: 'confirm/:value1/:value2',  component: RegisterComponent },
  { path: 'home',                     component: HomeComponent },
  { path: '**',                       component: My404Component }
])

Ensure that this entry always remains at the bottom of your routing configuration:

  { path: '**',                       component: My404Component }

How can I create an interceptor in Angular2 to detect 500 and 404 errors in my app.ts file?

Answer №1

Answer №2

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