Models and Computed Properties

components.my-component.js

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

export default Ember.Component.extend({
  fullName: computed('model.firstname', function() {
  	return this.model.firstname + ' '  + this.model.lastname
  })
});

controllers.application.js

import Ember from 'ember';

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

router.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

const Router = EmberRouter.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
});

export default Router;

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
  	return {firstname: "Eliza", lastname: "Thornberry"}
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
application.hbs
<br>
<br>
{{my-component model=model}}
<br>

templates.components.my-component.hbs

my-component.hbs
<br><br>
<div>
This is a component-level computed property:
</div>
<div>
{{fullName}}
</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": "3.2.0"
  }
}