How to hide the Angular Material Sidenav when a user clicks a link

Question

I am developing an Angular app that uses Material UI, I used the Angular CLI to generate the following code:

Navigation HTML

<mat-sidenav-container class="sidenav-container">
  <mat-sidenav #drawer class="sidenav" fixedInViewport [attr.role]="(isHandset$ | async) ? 'dialog' : 'navigation'"
    [mode]="(isHandset$ | async) ? 'over' : 'side'" [opened]="(isHandset$ | async) === false">
    <mat-toolbar>
      <mat-icon>keyboard_arrow_down</mat-icon> Select
    </mat-toolbar>
    <mat-nav-list>
      <a mat-list-item [routerLink]="['home']">
        <mat-icon>location_on</mat-icon> - Home
      </a>
    </mat-nav-list>
  </mat-sidenav>
  <mat-sidenav-content>
    <mat-toolbar color="primary">
      <button type="button" aria-label="Toggle sidenav" mat-icon-button (click)="drawer.toggle()"
        *ngIf="isHandset$ | async">
        <mat-icon aria-label="Side nav toggle icon">menu</mat-icon>
      </button>
    </mat-toolbar>
    <!-- Add Content Here -->
    <ng-content></ng-content>
  </mat-sidenav-content>
</mat-sidenav-container>

Navigation TypeScript

import { Component } from '@angular/core';
import { BreakpointObserver, Breakpoints } from '@angular/cdk/layout';
import { Observable } from 'rxjs';
import { map, shareReplay } from 'rxjs/operators';

@Component({
  selector: 'app-navigation',
  templateUrl: './navigation.component.html',
  styleUrls: ['./navigation.component.scss']
})
export class NavigationComponent {

  isHandset$: Observable<boolean> = this.breakpointObserver.observe(Breakpoints.Handset)
    .pipe(
      map(result => result.matches),
      shareReplay()
    );



  constructor(private breakpointObserver: BreakpointObserver) {}

}

My problem is that I want the navbar to close (disappear) when the user clicks on a link. How do I do that? When the user clicks a link, the navbar stays enabled. I have to tap somewhere at the background to make it vanish.

Answer 1

you already have a template reference #drawer of the sidenav component so you can call toggle method like this

 <mat-nav-list (click)="drawer.toggle()">
      <a mat-list-item [routerLink]="['home']">
        <mat-icon>location_on</mat-icon> - Home
      </a>
 </mat-nav-list>

in case we want to toggle the sidebar base of small screen (mobile)

compoenent

  toggle(nav: MatSidenav) {
    const isSmallScreen = this.breakpointObserver.isMatched(
      "(max-width: 599px)"
    );
    if (isSmallScreen) {
      nav.toggle();
    }
  }

template

 <mat-nav-list (click)="toggle(drawer)">
      <a mat-list-item [routerLink]="['home']">
        <mat-icon>location_on</mat-icon> - Home
      </a>
 </mat-nav-list>

demo 🚀