nested-route

controllers.application.js

import Ember from 'ember';

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

router.js

import Ember from 'ember';
import config from './config/environment';

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

Router.map(function() {
  this.route('users', function() {
  	this.route('view', { path: ':user_id' }, function() {
    	this.route('edit');
      this.route('post');
    });
  });
});

export default Router;

routes.application.js

import Ember from 'ember';

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

routes.users.index.js

import Ember from 'ember';

export default Ember.Route.extend({
   model() {
     return Ember.A([
       { id: 1, name: "User 1"},
       { id: 2, name: "User 2"}
     ]);
  }
});

routes.users.js

import Ember from 'ember';

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

routes.users.view.index.js

import Ember from 'ember';

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

routes.users.view.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
   return Ember.Object.create({ id: 3, name: "User 3" }); 
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>

{{link-to "/users" "users"}}

<br>
<br>
{{outlet}}
<br>
<br>

templates.users.hbs

{{outlet}}

templates.users.index.hbs

{{#each model as |user|}}
	{{!-- {{#link-to "users.view" user.id}} --}}
	{{#link-to "users.view" user}}
  	{{user.name}}
  {{/link-to}}<br>
{{/each}}

templates.users.view.hbs

User view:
<br>
{{outlet}}

templates.users.view.index.hbs

ID: {{model.id}}
<br>
Name: {{model.name}}

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}