public function __toString()
 {
     global $PH;
     global $auth;
     require_once confGet('DIR_STREBER') . 'lists/list_files.inc.php';
     $files = File::getall(array('parent_item' => $this->item_with_attachments->id));
     $list = new ListBlock_files();
     $list->reduced_header = true;
     $list->query_options['parent_item'] = $this->item_with_attachments->id;
     $list->show_functions = false;
     unset($list->columns['status']);
     unset($list->columns['mimetype']);
     unset($list->columns['filesize']);
     unset($list->columns['created_by']);
     unset($list->columns['version']);
     unset($list->columns['_select_col_']);
     unset($list->columns['modified']);
     unset($list->columns['name']);
     unset($list->columns['thumbnail']);
     unset($list->block_functions['list']);
     unset($list->block_functions['grouped']);
     unset($list->functions['fileEdit']);
     unset($list->functions['filesDelete']);
     $list->title = __('Attached files');
     if ($this->item_with_attachments->isEditable()) {
         $list->summary = buildFileUploadForm($this->item_with_attachments);
     }
     $list->print_automatic($project);
     $PH->go_submit = $PH->getValidPage('filesUpload')->id;
     return "";
 }