app/assets/javascripts/partners.coffee
$ ->
$('#add_partner_setting').on 'click', ->
new_index = Date.now()
fields = $('#partner_setting_template').children().clone(true)
fields.children().each (index, node) ->
node = $(node)
if node.is('input')
node.attr('disabled', false).attr 'name', (index, name) -> name.replace('index', new_index)
fields.insertBefore this
$('.remove_partner_setting').on 'click', ->
$(this).parent().prev().remove()
$(this).remove()