$('.categories-widget .editable .categories').append(
  '<%= escape_javascript(render "show", category: @category) %>'
);
$('.categories-widget .read .categories').append(
  '<%= escape_javascript(render "show", category: @category, read: true) %>'
);
$('.categories-widget .editable form#new-category input[name="category[label]"]').val('');