New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  actions: {
    createApproval() {
      const approval = this.store.createRecord('approval', { name: this.get('model.length') })
      console.log(approval)
    }
  }
});

models.approval.js

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

export default Model.extend({
  name: attr()
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
		this.store.createRecord('approval')    
		return this.store.peekAll('approval');    
  }
});

templates.application.hbs

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

<h1>
Length: {{model.length}}
</h1>

{{#each model as |approval|}}
	{{approval.name}}
{{/each}}
<div>
  <button {{action 'createApproval'}}>
    Create Approval
  </button>
</div>
<br>
<br>

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0"
  }
}