Edit mode without component

controllers.application.js

import Ember from 'ember';

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

models.comment.js

import Model from "ember-data/model";
import attr from "ember-data/attr";
import { belongsTo, hasMany } from "ember-data/relationships";

export default Model.extend({
  content: attr(),
  post: belongsTo('post'), 
});

models.post.js

import Model from "ember-data/model";
import attr from "ember-data/attr";
import { belongsTo, hasMany } from "ember-data/relationships";

export default Model.extend({
  title: attr(),
  comments: hasMany('comment'),
});

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('post', {path: '/'}, function(){
    this.route('edit');
    this.route('index', {path: '/'}, function(){
    	this.route('comments', {path: '/'});
    });
  });
});

export default Router;

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    this.store.push({
      data: [{
        id: 1,
        type: 'post',
        attributes: {
          title: 'First Post',
        },
        relationships: {
        	comments: {
            data : [
              {id: 1, type: "comment"},
              {id: 2, type: "comment"},
              {id: 3, type: "comment"},
              ]
          }
        }
      }],
      included: [
        {
          id: 1,
          type: 'comment',
          attributes: {
            content: 'Lorem ipsum dolor sit amet, consectetur adipisicing elit',
          },
          relationships: {
            post: { data : { id: 1, type: "post"}}
          }
        },
        {
          id: 2,
          type: 'comment',
          attributes: {
            content: 'Duis aute irure dolor in reprehenderit in voluptate velit essecillum dolore eu',
          },
          relationships: {
            post: { data : { id: 1, type: "post"}}
          }
        },
        {
          id: 3,
          type: 'comment',
          attributes: {
            content: ' Excepteur sint occaecat',
          },
          relationships: {
            post: { data : { id: 1, type: "post"}}
          }
        },
      ]
    });
  }
});

routes.post.edit.js

import Ember from 'ember';

export default Ember.Route.extend({
  model(){
    return this.store.peekRecord('post', 1);
  }
});

routes.post.index.comments.js

import Ember from 'ember';

export default Ember.Route.extend({
  model(){
    return this.store.peekRecord('post', 1).get('comments');
  }
});

routes.post.index.js

import Ember from 'ember';

export default Ember.Route.extend({
  model(){
    return this.store.peekRecord('post', 1);
  }
});

templates.application.hbs

{{#link-to 'post.index'}}Post{{/link-to}} |
{{#link-to 'post.edit'}}Edit{{/link-to}} |
{{#link-to 'post.index.comments'}}comments{{/link-to}}
<hr>
{{outlet}}

<br>
<br>

templates.post.edit.hbs

{{input value=model.title}}<br>
{{#link-to 'post.index'}}Cancel{{/link-to}}
<hr>
{{outlet}}

templates.post.index.comments.hbs

<strong>Comments</strong> <br>
{{#each model as |comment|}}
	{{comment.content}} <br>
{{/each}}

templates.post.index.hbs

Post title: {{model.title}}<br>
{{#link-to 'post.edit'}}Edit post{{/link-to}}
<hr>
{{outlet}}

tests.helpers.destroy-app.js

import Ember from 'ember';

export default function destroyApp(application) {
  Ember.run(application, 'destroy');
}

tests.helpers.resolver.js

import Resolver from '../../resolver';
import config from '../../config/environment';

const resolver = Resolver.create();

resolver.namespace = {
  modulePrefix: config.modulePrefix,
  podModulePrefix: config.podModulePrefix
};

export default resolver;

tests.helpers.start-app.js

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

const { run } = Ember;
const assign = Ember.assign || Ember.merge;

export default function startApp(attrs) {
  let application;

  let attributes = assign({rootElement: "#test-root"}, config.APP);
  attributes = assign(attributes, attrs); // use defaults, but you can override;

  run(() => {
    application = Application.create(attributes);
    application.setupForTesting();
    application.injectTestHelpers();
  });

  return application;
}

tests.test-helper.js

import resolver from './helpers/resolver';
import {
  setResolver
} from 'ember-qunit';

setResolver(resolver);

twiddle.json

{
  "version": "0.11.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.2",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.10.2",
    "ember-testing": "2.10.2"
  },
  "addons": {}
}