component-semantics-test

components.my-book.js

import Ember from 'ember';

export default Ember.Component.extend({
  willRender() {
   	console.log('rendered!')
  },
  
  click() {
    this.get('select')()
  },
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  bookIds: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
  selectedBook: 0,
  
  books: Ember.computed('bookIds.[]', 'selectedBook', function() {
   	const bookIds = this.get('bookIds')
    const selectedBook = this.get('selectedBook')
    
    return bookIds.map(function (b) {
      let suffix = ''
      
      if (b === selectedBook) suffix = '- Selected'
      return {
        id: b,
        title: `Book ${b}${suffix}`
      }
    })
  }),
  
  actions: {
  	selectBook(id) {
      this.set('selectedBook', id)
    }
	},
});

templates.application.hbs

{{#each books as |book|}}
  {{my-book
    book=book
    select=(action 'selectBook' book.id)
  }}
{{/each}}

{{outlet}}

templates.components.my-book.hbs

<h1>{{book.title}}</h1>

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}