Railsでいいねボタンを表示

Turbokinksでajaxな画面遷移をした際にいいねボタンが表示されない時の対応メモ

turbolinks対応でボタンのjsを読み込む

<body>
  <div id="fb-root"></div>

  <!-- Like button -->
  <div class="fb-like" data-send="true" data-layout="button_count" data-width="450" data-show-faces="true"></div>
$ ->
  loadFacebookSDK()
  bindFacebookEvents() unless window.fbEventsBound

bindFacebookEvents = ->
  $(document)
    .on('page:fetch', saveFacebookRoot)
    .on('page:change', restoreFacebookRoot)
    .on('page:load', ->
      FB.XFBML.parse()
    )
  @fbEventsBound = true

saveFacebookRoot = ->
  if $('#fb-root').length
    @fbRoot = $('#fb-root').detach()

restoreFacebookRoot = ->
  if @fbRoot?
    if $('#fb-root').length
      $('#fb-root').replaceWith @fbRoot
  else
    $('body').append @fbRoot

loadFacebookSDK = ->
  window.fbAsyncInit = initializeFacebookSDK
  $.getScript("//connect.facebook.net/en_US/sdk.js")

initializeFacebookSDK = ->
  FB.init
    appId     : 'YOUR_APP_ID'
    xfbml     : true
    version   : 'v2.6'

参考