How do I navigate to a parent route from a child route?

Question

My problem is quite classic. I have a private part of an application which is behind a login form. When the login is successful, it goes to a child route for the admin application.

My problem is that I can't use the global navigation menu because the router tries to route in my AdminComponent instead of my AppCompoment. So my navigation is broken.

Another problem is that if someone want to access the URL directly, I want to redirect to the parent "login" route. But I can't make it work. It seems to me like theses two issues are similar.

Any idea how it can be done?

Answer 1

Do you want a link/HTML or do you want to route imperatively/in code?

Link: The RouterLink directive always treats the provided link as a delta to the current URL:

[routerLink]="['/absolute']"
[routerLink]="['../../parent']"
[routerLink]="['../sibling']"
[routerLink]="['./child']"     // or
[routerLink]="['child']" 

// with route param     ../../parent;abc=xyz
[routerLink]="['../../parent', {abc: 'xyz'}]"
// with query param and fragment   ../../parent?p1=value1&p2=v2#frag
[routerLink]="['../../parent']" [queryParams]="{p1: 'value', p2: 'v2'}" fragment="frag"

With RouterLink, remember to import and use the directives array:

import { ROUTER_DIRECTIVES } from '@angular/router';
@Component({
    directives: [ROUTER_DIRECTIVES],

Imperative: The navigate() method requires a starting point (i.e., the relativeTo parameter). If none is provided, the navigation is absolute:

import { Router, ActivatedRoute } from '@angular/router';
...
constructor(private router: Router, private route: ActivatedRoute) {}
...
this.router.navigate(["/absolute/path"]);
this.router.navigate(["../../parent"], {relativeTo: this.route});
this.router.navigate(["../sibling"],   {relativeTo: this.route});
this.router.navigate(["./child"],      {relativeTo: this.route}); // or
this.router.navigate(["child"],        {relativeTo: this.route});

// with route param     ../../parent;abc=xyz
this.router.navigate(["../../parent", {abc: 'xyz'}], {relativeTo: this.route});
// with query param and fragment   ../../parent?p1=value1&p2=v2#frag
this.router.navigate(["../../parent"], {relativeTo: this.route, 
    queryParams: {p1: 'value', p2: 'v2'}, fragment: 'frag'});

// navigate without updating the URL 
this.router.navigate(["../../parent"], {relativeTo: this.route, skipLocationChange: true});

Answer 2

This seems to work for me as of Spring 2017:

goBack(): void {
  this.router.navigate(['../'], { relativeTo: this.route });
}

Where your component ctor accepts ActivatedRoute and Router, imported as follows:

import { ActivatedRoute, Router } from '@angular/router';