Testing defineProperty

controllers.application.js

import Ember from 'ember';
import { defineProperty, computed } from '@ember/object';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',

	init() {
    const attrs = { firstName: 'Foo', lastName: 'Bar' };
  	const model = this.store.createRecord('my-model', attrs);

    defineProperty(model, 'fullName', computed('model.{firstName,lastName}', {
	    get: () => { 
        const { firstName, lastName } = this.model;
      	return `${firstName} ${lastName}`;
      },
	    set: (key, value) => {
        const names = value.split(' ');
        
        this.set('model.firstName', names[0]);
        this.set('model.lastName', names[1]);

        return value;
      },
    }));
      
    this.set('model', model);
  },
  
  actions: {
	  onSubmit(fullName) {
      this.set('model.fullName', fullName);
    },
  }
});

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({
  firstName: attr('string'),
  lastName: attr('string'),
});

templates.application.hbs

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


<h4>First Name: {{model.firstName}}</h4>
<h4>Last Name: {{model.lastName}}</h4>
<h4>Full Name: {{model.fullName}}</h4>

<p>Please enter a new first and last name</p>
<input value={{newValue}} onchange={{action (mut newValue) value="target.value"}}/>
<button onclick={{action "onSubmit" newValue}}>Submit</button>

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}