New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  store: Ember.inject.service(),
  
  modelNameFromModelFor: Ember.computed(function() {
    return this.get('store').modelFor('my-model').modelName;
  }),
  
  modelNameFromCreateRecord: Ember.computed(function() {
    return this.get('store').createRecord('my-model').modelName;
  })
});

models.my-model.js

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

export default Model.extend({
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<p>Model name via `modelFor()`: "{{modelNameFromModelFor}}"</p>
<p>Model name via `createRecord()`: "{{modelNameFromCreateRecord}}"</p>

twiddle.json

{
  "version": "0.10.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.6.0",
    "ember-data": "2.6.1",
    "ember-template-compiler": "2.6.0"
  },
  "addons": {}
}