New Twiddle

components.wb-checkbox-list.js

import Ember from 'ember';

export default Ember.Component.extend({
	selectedItems: [],
	items: [],
  	actions: {
		handleChange(item, event) {
			if (event.target.checked) {
				this.get('selectedItems').push(item);
			}
      console.log(this.get('selectedItems'));
		}
	}
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  selectedChartTypes: [],
  chartTypeOptions: [
		{
			key: 'sales',
			value: 'Sales'
    },
		{
			key: 'inventory',
			value: 'Inventory'
    },
		{
			key: 'units',
			value: 'Units'
		}
	],
  thing: Ember.computed('[email protected]', function() {
    console.log('computed');
    return this.get('chartTypes');
  })
});

templates.application.hbs

{{log 'template' chartTypes}}

{{wb-checkbox-list
  items=chartTypeOptions
  label="value"
  key="key"
  selectedItems=selectedChartTypes
}}

templates.components.wb-checkbox-list.hbs

{{#each items as |item|}}
	<div class="checkbox-wrap">
		<label>{{get item label}}</label>
		<input
			type="checkbox"
			onchange={{action 'handleChange' item}}
		>
	</div>
{{/each}}

twiddle.json

{
  "version": "0.13.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3"
  }
}