How to access child router in Aurelia?

Question

I have two child routers. I can navigate from one to other. But from the child router view, how can I navigate?

Below line of code gives the parent router instance.

Answer 1

To create a child router, create a new router on a child route in the same way you created a router on the parent route. Then, set the router as a property of the view model class so you can access it throughout your view model.

import { Router } from 'aurelia-router';

class ChildViewModel() {  
    configureRouter(config, router) {
        this.router = router;
        // router config
    }
    someOtherFunction() {
        this.router.navigate('somewhere');
    }
}

If you then want to use the child router in another view model, you can import it and use the router on the class (assuming that the class is a singleton, which it should be unless you configure it otherwise).

import { inject } from 'aurelia-framework';
import { ChildViewModel } from './child-view-model';

@inject(ChildViewModel)
class AnotherViewModel() {
    constructor(cvm) {
        this.externalRouter = cvm.router;
    }
    doStuff() {
        this.externalRouter.navigate('somewhere');
    }
    doOtherStuff() {
        ChildViewModel.router.navigate('somewhere else');
    }
}