How to hide a parent component when switching to a child component

How to hide a parent component when switching to a child component

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When I start the application, I have the "AppComponent" component displayed. Through it, using AuthGuard I turn or do not go to the module routes: GalleryModule. My problem is that when I go over the child routes GalleryAddComponent or GalleryItemComponent to GalleryComponent, my father GalleryComponent does not hide, and the child component is displayed below. and I need that during the transition on the child GalleryAddComponent and GalleryItemComponent my father would hide GalleryComponent. How to implement it?

Structure of my project:


const appRoutes: Routes = [
    path: '',
    pathMatch: 'full',
    redirectTo: 'app-root'

  imports: [
  exports: [RouterModule],

The problem is with the placement of <router-outlet></router-outlet>. It should not be in gallery.component.html. If you have <router-outlet></router-outlet> in app.component.html then it will handle the routing.

In short just remove <router-outlet></router-outlet>


If you are facing the issue related AuthGuard. Create new Component which handles the routing for the Gallery.

Follow these steps
  1. Create Main Component for Gallary
Class GalleryMainComponent{

  1. Change in the routing-
const galleryRoutes: Routes = [
        path: '',
        canActivate: [AuthGuard],
        component: GalleryMainComponent,
        children: [
            {path: 'gallery', component: GalleryComponent},
            {path: 'gallery-add', component: GalleryAddComponent},
            {path: 'galleryItem/:id', component: GalleryItemComponent},

Note : Do not forget to remove the <router-outlet></router-outlet> from gallery.component.html

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SO you have to remove the child routes from GalleryRoutingModule. And router-outlet from the Gallerycomponent. And need to make the routes normal way (no nested/ child routes ) in the GalleryRoutingModule

You can however let the child component ask the parent component to switch to a tab. This can be done using an output. CHILD : login.component.ts #Output()  You have two components - a Parent component and a Child component. The Child component is the component you are going to toggle the visibility of. You set the initial state of the Parent component to include the property isHidden, and set the value to true. The conditional statement in the render function returns false, and the Child component isn’t rendered. Then you have a toggleHidden function.


public navigation = new Subject<any>();
public navigation$ = this.navigation.asObservable();

In GalleryAddComponent & GalleryItemComponent, You can create emit an observable using service.;

In Gallery Component, you can subscribe to listen for the changes.

public displayGalleryContent = true;
     this.displayGalleryContent = true;


<div *ngIf="displayGalleryContent"></div>

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