Conditionals

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember 2.0'
});

application.template.hbs

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

index.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model(){
  	return {
      isFast: true,
      isFueled: true,
      person: {
      	firstName:'Yehuda',
        lastName: 'Katz'
      },
      isAtWork: false,
      isReading: true,
      hasPaid: false,
      total: 120
    };
  }
});

index.template.hbs

<div>
  {{if model.isFast "zoooom" "putt-putt-putt"}}
</div>

<div class="is-car {{if model.isFast "red" "blue"}}">
</div>

<div>
  {{input type='text' class=(if model.isFueled "zoooom")}}
</div>

{{#if model.person}}
  Welcome back, <b>{{model.person.firstName}} {{model.person.lastName}}</b>!
{{else}}
  Please log in.
{{/if}}

{{#if model.isAtWork}}
  Ship that code!
{{else if model.isReading}}
  <div>You can finish War and Peace eventually...</div>
{{/if}}

{{#unless model.hasPaid}}
  <div>You owe: $ {{model.total}}</div>
{{/unless}}

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}
.red {
  background-color: red;
  height:20px;
}
.blue {
  background-color: blue;
  height:20px;
}

twiddle.json

{
  "version": "0.5.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.2.0",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "2.2.0"
  }
}