public function remove_category()
 {
     if (!isset($_POST['id'])) {
         exit;
     }
     check_ajax_referer('fpd_ajax_nonce', '_ajax_nonce');
     header('Content-Type: application/json');
     $fancy_category = new Fancy_Category($_POST['id']);
     $result = $fancy_category->delete();
     echo json_encode($result);
     die;
 }