private function build_form($request)
 {
     $field = $request->get_value('field', 'pseudo');
     $sort = $request->get_value('sort', 'top');
     $current_page = $request->get_int('page', 1);
     if (!NewsletterAuthorizationsService::id_stream($this->stream->get_id())->read_subscribers()) {
         NewsletterAuthorizationsService::get_errors()->read_subscribers();
     }
     $mode = $sort == 'top' ? 'ASC' : 'DESC';
     switch ($field) {
         case 'pseudo':
             $field_bdd = 'display_name';
             break;
         default:
             $field_bdd = 'display_name';
     }
     $subscribers_list = NewsletterService::list_subscribers_by_stream($this->stream->get_id());
     $nbr_subscribers = count($subscribers_list);
     $pagination = new ModulePagination($current_page, $nbr_subscribers, $this->nbr_subscribers_per_page);
     $pagination->set_url(NewsletterUrlBuilder::subscribers($this->stream->get_id(), $this->stream->get_rewrited_name(), $field, $sort, '%d'));
     if ($pagination->current_page_is_empty() && $current_page > 1) {
         $error_controller = PHPBoostErrors::unexisting_page();
         DispatchManager::redirect($error_controller);
     }
     $this->view->put_all(array('C_SUBSCRIBERS' => (int) $nbr_subscribers, 'C_SUBSCRIPTION' => NewsletterUrlBuilder::subscribe()->rel(), 'C_PAGINATION' => $pagination->has_several_pages(), 'SORT_PSEUDO_TOP' => NewsletterUrlBuilder::subscribers($this->stream->get_id(), $this->stream->get_rewrited_name(), 'pseudo', 'top', $current_page)->rel(), 'SORT_PSEUDO_BOTTOM' => NewsletterUrlBuilder::subscribers($this->stream->get_id(), $this->stream->get_rewrited_name(), 'pseudo', 'bottom', $current_page)->rel(), 'PAGINATION' => $pagination->display()));
     if (!empty($nbr_subscribers)) {
         $result = PersistenceContext::get_querier()->select("SELECT subscribers.id, subscribers.user_id, subscribers.mail, member.display_name, member.email\n\t\t\tFROM " . NewsletterSetup::$newsletter_table_subscribers . " subscribers\n\t\t\tLEFT JOIN " . DB_TABLE_MEMBER . " member ON subscribers.user_id = member.user_id\n\t\t\tWHERE subscribers.id IN :ids_list\n\t\t\tORDER BY " . $field_bdd . " " . $mode . "\n\t\t\tLIMIT :number_items_per_page OFFSET :display_from", array('ids_list' => array_keys($subscribers_list), 'number_items_per_page' => $pagination->get_number_items_per_page(), 'display_from' => $pagination->get_display_from()));
         while ($row = $result->fetch()) {
             $pseudo = $row['user_id'] > 0 ? '<a href="' . UserUrlBuilder::profile($row['user_id'])->rel() . '">' . $row['display_name'] . '</a>' : LangLoader::get_message('visitor', 'user-common');
             $mail = $row['user_id'] > 0 ? $row['email'] : $row['mail'];
             if (!empty($mail)) {
                 $this->view->assign_block_vars('subscribers_list', array('C_AUTH_MODO' => NewsletterAuthorizationsService::id_stream($this->stream->get_id())->moderation_subscribers(), 'C_EDIT' => $row['user_id'] == User::VISITOR_LEVEL, 'U_EDIT' => $row['user_id'] == User::VISITOR_LEVEL ? NewsletterUrlBuilder::edit_subscriber($row['id'])->rel() : '', 'U_DELETE' => NewsletterUrlBuilder::delete_subscriber($row['id'], $this->stream->get_id())->rel(), 'PSEUDO' => $pseudo, 'MAIL' => $mail));
             }
         }
         $result->dispose();
     }
 }