Изменение title

$aTitle = array($oInformationsystem->name);
$aDescription = array($oInformationsystem->name);
$aKeywords = array($oInformationsystem->name);

if (!is_null($Informationsystem_Controller_Show->tag) && Core::moduleIsActive('tag'))
{
   $oTag = Core_Entity::factory('Tag')->getByPath($Informationsystem_Controller_Show->tag);
   if ($oTag)
   {
      $aTitle[] = $oTag->seo_title != '' ? $oTag->seo_title : Core::_('Informationsystem.tag', $oTag->name);
      $aDescription[] = $oTag->seo_description != '' ? $oTag->seo_description : $oTag->name;
      $aKeywords[] = $oTag->seo_keywords != '' ? $oTag->seo_keywords : $oTag->name;
   }
}

if ($Informationsystem_Controller_Show->group)
{
   $oInformationsystem_Group = Core_Entity::factory('Informationsystem_Group', $Informationsystem_Controller_Show->group);

   do {
      $aTitle[] = $oInformationsystem_Group->seo_title != ''
         ? $oInformationsystem_Group->seo_title
         : $oInformationsystem_Group->name;

      $aDescription[] = $oInformationsystem_Group->seo_description != ''
         ? $oInformationsystem_Group->seo_description
         : $oInformationsystem_Group->name;

      $aKeywords[] = $oInformationsystem_Group->seo_keywords != ''
         ? $oInformationsystem_Group->seo_keywords
         : $oInformationsystem_Group->name;

   } while($oInformationsystem_Group = $oInformationsystem_Group->getParent());
}

if ($Informationsystem_Controller_Show->item)
{
   $oInformationsystem_Item = Core_Entity::factory('Informationsystem_Item', $Informationsystem_Controller_Show->item);

   $aTitle[] = $oInformationsystem_Item->seo_title != ''
      ? $oInformationsystem_Item->seo_title
      : $oInformationsystem_Item->name;

   $aDescription[] = $oInformationsystem_Item->seo_description != ''
      ? $oInformationsystem_Item->seo_description
      : $oInformationsystem_Item->name;

   $aKeywords[] = $oInformationsystem_Item->seo_keywords != ''
      ? $oInformationsystem_Item->seo_keywords
      : $oInformationsystem_Item->name;
}

if ($Informationsystem_Controller_Show->page)
{
   array_unshift($aTitle, $pageName . ' ' . ($Informationsystem_Controller_Show->page + 1));
}

if (count($aTitle) > 1)
{
   $aTitle = array_reverse($aTitle);
   $aDescription = array_reverse($aDescription);
   $aKeywords = array_reverse($aKeywords);

   Core_Page::instance()->title(implode($pageSeparator, $aTitle));
   Core_Page::instance()->description(implode($pageSeparator, $aDescription));
   Core_Page::instance()->keywords(implode($pageSeparator, $aKeywords));
}

Core_Page::instance()->object = $Informationsystem_Controller_Show;

if (count($aTitle))