Hide header on specif route - angular 6

Question

I'm trying to hide the header, only in one route.

Let's say that I've three routes, route1, route2 and route3.

And I've one component called app-header.

I want the component app-header to be hidden when the user enters in the route1 and show this component in the other 2 routes.

I've found some topics here on stackoverflow, but none of them helped me =/

Can you guys give me some help with that?

Here's my code:

• app.component.ts

  export class AppComponent implements OnInit {
      showHeader = true;
  
      constructor(
          private router: Router
      ) {
          this.router.events.subscribe(event => this.modifyHeader(event));
      }
  
      ngOnInit() {
      }
  
      modifyHeader(location) { // This method is called many times
          console.log(location.url); // This prints a loot of routes on console
          if (location.url === '/route1') {
              this.showHeader = false;
          } else {
              this.showHeader = true;
          }
      }
  }
  

  • app.component.html

    <app-header *ngIf="showHeader"></app-header>
    <router-outlet></router-outlet>
    

I'm using angular 6.1.4

Answer 1

Since you know which route you want to detect, and seem to have a solution in the app component in mind, I'd suggest filtering the router events, as such:

export class AppComponent implements OnInit {
    showHeader = true;

    constructor(
        private router: Router
    ) {
        this.router.events.pipe(
            filter(e => e instanceOf NavigationEnd)
        ).subscribe(event => this.modifyHeader(event));
    }

    ngOnInit() {
    }

    modifyHeader(location) { // This method is called many times
        console.log(location.url); // This prints a loot of routes on console
        if (location.url === '/route1') {
            this.showHeader = false;
        } else {
            this.showHeader = true;
        }
    }
}