PeekAll

controllers.application.js

import Ember from 'ember';

const { inject: { service } } = Ember;

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  store: service(),
  
  index: 0,
  
  actions: {
  	createRecord() {
      var names = ["A", "B", "C", "D", "E", "F", "G"];
      var name = names[this.get('index')];
      
      this.get('store').createRecord('my-model', { name });
      this.incrementProperty('index');
    },
    
    loadRecords() {
    	this.set('records', this.get('store').peekAll('my-model')); 
    }
  }
});

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({
  name: attr('string')
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{#each records as |record|}}
	{{record.name}}
{{/each}}
<br>
<br>
<button {{action "createRecord"}}>Create Record</button>
<button {{action "loadRecords"}}>Load Records</button>

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"
  }
}