From an html page I want to route to another page using routerLink
and state
.
There's no issues with <a>
tag, during ngOnInit
in landing page, I can retrieve state
as expected.
Using <button>
tag home page is navigate as well but state
results undefined
.
What's my wrong?
html of login page
<button routerLink="/home" [state]="navExtra.state">
Go Home Page via button
</button>
<a routerLink="/home" [state]="navExtra.state">Go Home Page via a</a>
ts of login page
import { Component, OnInit } from '@angular/core';
import { NavigationExtras } from '@angular/router';
@Component({
selector: 'app-login',
templateUrl: './login.page.html',
styleUrls: ['./login.page.scss']
})
export class LoginPage implements OnInit {
navExtra: NavigationExtras = {
state: { data: { a: 'a', b: 'b' } }
};
constructor() {}
ngOnInit() {}
}
ts of home page
import { Component, OnInit } from '@angular/core';
import { Router } from '@angular/router';
@Component({
selector: 'app-home',
templateUrl: './home.page.html',
styleUrls: ['./home.page.scss']
})
export class HomePage implements OnInit {
constructor(
private router: Router
) {}
ngOnInit() {
console.log(this.router.getCurrentNavigation().extras.state);
}
}
I don't think it is possible to pass state
through a button. If we inspect the source code of routerLink
, we can see...
when not an a
tag:
@Directive({selector: ':not(a):not(area)[routerLink]'})
state
isn't included in extras
:
@HostListener('click')
onClick(): boolean {
const extras = {
skipLocationChange: attrBoolValue(this.skipLocationChange),
replaceUrl: attrBoolValue(this.replaceUrl),
};
this.router.navigateByUrl(this.urlTree, extras);
return true;
}
whereas when we have an a
tag:
@Directive({selector: 'a[routerLink],area[routerLink]'})
it is included:
@HostListener('click', [/** .... **/])
onClick(/** .... **/): boolean {
// .....
const extras = {
skipLocationChange: attrBoolValue(this.skipLocationChange),
replaceUrl: attrBoolValue(this.replaceUrl),
state: this.state // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< here!
};
this.router.navigateByUrl(this.urlTree, extras);
return false;
}
So your option is to style that link to look like a button, or then call a function on button click which performs the navigation, like presented in other answer, here I kindly refer to that code posted by AbolfazlR:
this.router.navigate(['home'], this.navExtra);