I use angular (latest version) and angular material.
There are 3 components:
How to open / close sidenav from another component ? (in my case, the button is in header.component).
Tried the following option (but got the error: TypeError: this.RightSidenavComponent.rightSidenav is undefined):
header.component.html
<button mat-button (click)="toggleRightSidenav()">Toggle side nav</button>
header.component.ts
import { Component } from '@angular/core';
import { RightSidenavComponent } from '../right-sidenav/right-sidenav.component';
@Component({
selector: 'app-header',
templateUrl: './header.component.html',
styleUrls: ['./header.component.scss']
})
export class HeaderComponent {
constructor(public RightSidenavComponent:RightSidenavComponent) { }
toggleRightSidenav() {
this.RightSidenavComponent.rightSidenav.toggle();
}
}
sidenav.component.html
<mat-sidenav-container class="sidenav-container">
<mat-sidenav #sidenav mode="side" opened="true" class="sidenav"
[fixedInViewport]="true"> Sidenav </mat-sidenav>
<mat-sidenav-content>
<app-header></app-header>
<router-outlet></router-outlet>
<app-right-sidenav #rSidenav></app-right-sidenav>
</mat-sidenav-content>
</mat-sidenav-container>
sidenav.component.ts
import { Component, Directive, ViewChild } from '@angular/core';
import { RightSidenavComponent } from '../right-sidenav/right-sidenav.component';
@Component({
selector: 'app-sidenav',
templateUrl: './sidenav.component.html',
styleUrls: ['./sidenav.component.scss']
})
export class SidenavComponent {
@ViewChild('rSidenav') public rSidenav;
constructor(public RightSidenavComponent: RightSidenavComponent) {
this.RightSidenavComponent.rightSidenav = this.rSidenav;
}
}
right-sidenav.component.html
<mat-sidenav #rightSidenav mode="side" opened="true" class="rightSidenav"
[fixedInViewport]="true" [fixedTopGap]="250">
Sidenav
</mat-sidenav>
right-sidenav.component.ts
import { Component, Injectable } from '@angular/core';
@Component({
selector: 'app-right-sidenav',
templateUrl: './right-sidenav.component.html',
styleUrls: ['./right-sidenav.component.scss']
})
@Injectable()
export class RightSidenavComponent {
public rightSidenav: any;
constructor() { }
}
I had the same problem using. I resolved it like this.
SidenavService
import { Injectable } from '@angular/core';
import { MatSidenav } from '@angular/material';
@Injectable()
export class SidenavService {
private sidenav: MatSidenav;
public setSidenav(sidenav: MatSidenav) {
this.sidenav = sidenav;
}
public open() {
return this.sidenav.open();
}
public close() {
return this.sidenav.close();
}
public toggle(): void {
this.sidenav.toggle();
}
Your Component
constructor(
private sidenav: SidenavService) { }
toggleRightSidenav() {
this.sidenav.toggle();
}
Bind your html toggle() based on your requirement.
App component.
@ViewChild('sidenav') public sidenav: MatSidenav;
constructor(private sidenavService: SidenavService) {
}
ngAfterViewInit(): void {
this.sidenavService.setSidenav(this.sidenav);
}
App Module
providers: [YourServices , SidenavService],
Working sample with code stackblitz
Angular 9+ Update
Per this answer on SO, "Components can no longer be imported through @angular/material
. Use the individual secondary entry-points, such as @angular/material/button.
" As such, make sure to import MatSidenav
like so:
import { MatSidenav } from '@angular/material/sidenav';