Is there a way to programmatically retrieve the 'title' attribute of a route as it updates during navigation?

Question

Is there a way to programmatically retrieve the 'title' attribute of a route as it updates during navigation?

Scenario and Issue

I have set up various routes in my app-routing.module like this:

// imports

const routes: Routes = [
  { path: 'home', title: 'Home Route', component: HomeComponent },
  { path: 'other', title: 'Other Route', component: OtherComponent},
  { path: 'another', title: 'Yet Another Route', component: YetAnotherComponent },
  { path: '',   redirectTo: 'home', pathMatch: 'full' },
];

@NgModule({
  declarations: [],
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

Additionally, I have created a navigation-title.component that is meant to display the current route as "My App | Home Route" or "My App | Other Route", and so on.

However, I am facing a challenge in binding to the route title effectively.

Attempts Made

Utilizing `ActivatedRoute` in the `navigation-title` component

Initially, I attempted to inject

private activatedRoute: ActivatedRoute

and bind to this.activatedRoute.title (an

Observable<string | undefined>

) with an async pipe. However, it seems that this activated route does not update dynamically during navigation.

Listening to router navigation events

Next, I tried subscribing to router events, specifically to NavigationEnd, to update the title. Unfortunately, retrieving the title from the activated route after navigation always fetched the previous route's title.

Binding to the router outlet

Lastly, I bound to the router-outlet's (activate) event with an event handler inside my navigation-title.component. This method led to tight coupling between the title component and the router outlet.

Is there a more efficient (i.e. completely decoupled) way to simply fetch the route title using an injected Router or ActivatedRoute?

Note

I emphatically do not wish to utilize the TitleService because it seems redundant to allow a component to set the page title when it can already be defined within the corresponding route.

angular typescript angular-router

Answer 1

Answer №1

I have been struggling with the same issue for quite some time, but I finally found a workaround that works for me. One solution is to include both Router and Title in your component, then subscribe to the NavigationEnd event.

If you attempt to retrieve the title using getTitle() immediately after the event fires, you will receive the incorrect title (from the previous page). However, adding a timeout allows you to obtain the correct title.

constructor(private router: Router, private titleService: Title) {
    this.router.events.subscribe({
      next: (event) => {
        if (event instanceof NavigationEnd) {
          setTimeout(() => {
            const title = this.titleService.getTitle();
            console.log('Title: ', title);
          }, 50); //TODO: If no timeout it gets previous page title
        }
      },
    });
}

Answer 2

I have been struggling with the same issue for quite some time, but I finally found a workaround that works for me. One solution is to include both Router and Title in your component, then subscribe to the NavigationEnd event.

If you attempt to retrieve the title using getTitle() immediately after the event fires, you will receive the incorrect title (from the previous page). However, adding a timeout allows you to obtain the correct title.

constructor(private router: Router, private titleService: Title) {
    this.router.events.subscribe({
      next: (event) => {
        if (event instanceof NavigationEnd) {
          setTimeout(() => {
            const title = this.titleService.getTitle();
            console.log('Title: ', title);
          }, 50); //TODO: If no timeout it gets previous page title
        }
      },
    });
}

Answer 3

Answer №2

To add a unique touch to a static title, consider implementing the title strategy introduced in angular 14 +

Source: https://dev.to/brandontroberts/setting-page-titles-natively-with-the-angular-router-393j

@Injectable()
export class TemplatePageTitleStrategy extends TitleStrategy {
  constructor(private readonly title: Title) {
    super();
  }

  override updateTitle(routerState: RouterStateSnapshot) {
    const title = this.buildTitle(routerState);
    if (title !== undefined) {
      this.title.setTitle(`My App | ${title}`);
    }
  }
}

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule],
  providers: [
    {
      provide: TitleStrategy,
      useClass: TemplatePageTitleStrategy
    }
  ]
})
export class AppRoutingModule {}

Answer 4

To add a unique touch to a static title, consider implementing the title strategy introduced in angular 14 +

Source: https://dev.to/brandontroberts/setting-page-titles-natively-with-the-angular-router-393j

@Injectable()
export class TemplatePageTitleStrategy extends TitleStrategy {
  constructor(private readonly title: Title) {
    super();
  }

  override updateTitle(routerState: RouterStateSnapshot) {
    const title = this.buildTitle(routerState);
    if (title !== undefined) {
      this.title.setTitle(`My App | ${title}`);
    }
  }
}

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule],
  providers: [
    {
      provide: TitleStrategy,
      useClass: TemplatePageTitleStrategy
    }
  ]
})
export class AppRoutingModule {}

Is there a way to programmatically retrieve the 'title' attribute of a route as it updates during navigation?

Scenario and Issue

Attempts Made

Utilizing `ActivatedRoute` in the `navigation-title` component

Listening to router navigation events

Binding to the router outlet

Note

Answer №1

Answer №2

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Is there a way to programmatically retrieve the 'title' attribute of a route as it updates during navigation?

Scenario and Issue

Attempts Made

Utilizing ActivatedRoute in the navigation-title component

Listening to router navigation events

Binding to the router outlet

Note

Answer №1

Answer №2

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Utilizing `ActivatedRoute` in the `navigation-title` component