app/assets/javascripts/check_all_none.js.coffee
App.CheckAllNone =
initialize: ->
$('[data-check-all]').on 'click', ->
target_name = $(this).data('check-all')
$("[name='" + target_name + "']").prop('checked', true)
$('[data-check-none]').on 'click', ->
target_name = $(this).data('check-none')
$("[name='" + target_name + "']").prop('checked', false)