function do_delete()
{
$this->oPage->setBreadcrumbDetails(_kt("link"));
// check security
$oPermission =& KTPermission::getByName('ktcore.permissions.write');
if (PEAR::isError($oPermission) || !KTPermissionUtil::userHasPermissionOnItem($this->oUser, $oPermission, $this->oDocument)) {
$this->errorRedirectToMain(_kt('You do not have sufficient permissions to delete a link'), sprintf("fDocumentId=%d", $this->oDocument->getId()));
exit(0);
}
// check validity of things
$oDocumentLink = DocumentLink::get(KTUtil::arrayGet($_REQUEST, 'fDocumentLinkId'));
if (PEAR::isError($oDocumentLink)) {
$this->errorRedirectToMain(_kt('Invalid document link selected.'));
exit(0);
}
$oParentDocument = Document::get(KTUtil::arrayGet($_REQUEST, 'fDocumentId'));
if (PEAR::isError($oParentDocument)) {
$this->errorRedirectToMain(_kt('Invalid document selected.'));
exit(0);
}
// do deletion
$this->startTransaction();
// Cannot call delete directly if no link exists.
if ($oDocumentLink) {
$res = $oDocumentLink->delete();
if (PEAR::isError($res)) {
$this->errorRedirectToMain(_kt('Could not delete document link'), sprintf('fDocumentId=%d', $oParentDocument->getId()));
exit(0);
}
} else {
$this->successRedirectToMain(_kt('Document link not deleted. Document link does not exists, or previously deleted.'), sprintf('fDocumentId=%d', $oParentDocument->getId()));
}
$this->commitTransaction();
$this->successRedirectToMain(_kt('Document link deleted'), sprintf('fDocumentId=%d', $oParentDocument->getId()));
exit(0);
}
