/**
* Checks if the requested page is not in use from another user, and free the
* previous page used by current user.
*
* @param int The previous page id
*
*/
public function isPageFree($prevPage)
{
$operation = $this->idLanguage . $this->idPage;
$prevOperation = $this->idLanguage . $prevPage;
return semaphore::setRequestedOperation(sfContext::getInstance()->getUser()->getGuardUser()->getId(), $operation, $prevOperation);
}
