CCourse::OnBeforeLangDelete

static function OnBeforeLangDelete($lang)
{
	global $APPLICATION;
	$r = CCourse::GetList(array(), array("SITE_ID"=>$lang));

	$bAllowDelete = true;

	// Is any data exists for this site?
	if ($r->Fetch())
		$bAllowDelete = false;

	if ( ! $bAllowDelete )
		$APPLICATION->ThrowException(GetMessage('LEARNING_PREVENT_LANG_REMOVE'));

	return ($bAllowDelete);
}