div#tracks = form.simple_fields_for :tracks do |ff| .col-lg-6 .panel.panel-default .panel-heading .panel-title = Track.model_name.human.mb_chars.capitalize = ff.link_to_remove icon(:remove), class: ['btn', 'btn-danger', 'btn-xs', 'pull-right', ff.object.events.any? ? 'disabled' : nil] .panel-body = ff.input :name = ff.input :color, as: :color = ff.input :description .col-lg-6 .panel.panel-default .panel-heading .panel-title = t 'actions.new.title_m', model: Track.model_name.human .panel-body.text-center = form.link_to_add t('actions.create.button', model: Track.model_name.human), :tracks, data: {target: '#tracks'}, class: 'btn btn-success'