app/assets/javascripts/modal.js
function modalInit() {
var $modal = $('#modal');
var $form = $modal.find('form');
initMaterialize();
$modal.find(".modal-close").on('click.close', function() {
$modal.closeModal();
});
$form.find('[type=submit]').hide();
$form.data('remote', true);
$modal.find('.modal-submit').on('click', function() {
if ($form.data('remote')) {
$form.submit();
}
});
}