New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

router.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

const Router = EmberRouter.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('admin-profile', { path: '/admin/profile' });
  
  this.route('admin', function() {
    this.route('foo');
  });
});

export default Router;

routes.admin-profile.js

import Ember from 'ember';

export default Ember.Route.extend({
});

routes.admin.foo.js

import Ember from 'ember';

export default Ember.Route.extend({
});

routes.admin.js

import Ember from 'ember';

export default Ember.Route.extend({
});

templates.admin-profile.hbs

ADMIN PROFILE

templates.admin.foo.hbs

FOO

templates.admin.hbs

ADMIN
{{outlet}}

templates.application.hbs

{{link-to 'admin' 'admin'}}
{{link-to 'admin.foo' 'admin.foo'}}
{{link-to 'admin-profile' 'admin-profile'}}

{{outlet}}

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}