Test ED model.hasOwnProperty('id')

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  check: Ember.computed(function() {
  	let item = this.store.createRecord('item', { name: 'John'});
    return { 
      hasId: item.hasOwnProperty('id'),
      hasName: item.hasOwnProperty('name')
    };
  })
});

models.item.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>Test hasOwnProperty</h1>

<div>
	Has Id: {{check.hasId}}
</div>
<div>
	Has Name: {{check.hasName}}
</div>

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": "3.1.1"
  }
}