Working with Lists

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({

  list: [
    {name: 'r', color: 'red'},
    {name: 'b', color: 'blue'},
    {name: 'g', color: 'green'}
  ],
  
  sortedList: Ember.computed('list.[]', function() {
    let list = this.get('list');
    return list.sortBy('name');
  }),
  
  filteredList: Ember.computed('sortedList', 'selectedColor', function() {
    let list = this.get('list');
    let selectedColor = this.get('selectedColor');
    return list.filterBy('color', selectedColor);
  }),
  
  selectedColor: 'blue',
  
  actions: {
  
    selectColor: function(selectedColor) {
      this.set('selectedColor', selectedColor);
    }
    
  }
  
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

.red {
  color: red;
}

.green {
  color: green;
}

.blue {
  color: blue;
}

templates.application.hbs

<h1>Working with Lists</h1>

<h2>All</h2>

{{#each sortedList as |item index|}}
  <div>
    {{index}} -> {{item.name}} - {{item.color}}
  </div>
{{/each}}

<h2>Filtered</h2>

<button {{action 'selectColor' 'red'}}>red</button>
<button {{action 'selectColor' 'green'}}>green</button>
<button {{action 'selectColor' 'blue'}}>blue</button>

<br><br>

{{#each filteredList as |item|}}
  <div class="{{item.color}}">
    -> {{item.name}} - {{item.color}}
  </div>
{{/each}}

{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.10.6",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.9.0",
    "ember-template-compiler": "2.9.0",
    "ember-testing": "2.9.0"
  },
  "addons": {}
}