/**
* Removes the given related record from its relationship.
*
* @param Dataface_RelatedRecord &$related_record The related record to be removed.
* @param boolean $delete If true then the record will also be deleted from
* the database.
* @since 0.6.1
*/
function removeRelatedRecord(&$related_record, $delete = false, $secure = false)
{
if ($secure && !$related_record->_record->checkPermission('remove related record', array('relationship' => $related_record->_relationshipName))) {
// Use security to check to see if we are allowed to delete this
// record.
//echo $related_record->_record->_table->getDelegate()->getRoles(array('relationship'=>$related_record->_relationshipName));exit;
return Dataface_Error::permissionDenied(df_translate('scripts.Dataface.IO.removeRelatedRecord.PERMISSION_DENIED', 'Could not remove record "' . $related_record->getTitle() . '" from relationship "' . $related_record->_relationshipName . '" of record "' . $related_record->_record->getTitle() . '" because you have insufficient permissions.', array('title' => $related_record->getTitle(), 'relationship' => $related_record->_relationshipName, 'parent' => $related_record->_record->getTitle())));
}
$res = $this->fireEvent('beforeRemoveRelatedRecord', $related_record);
if (PEAR::isError($res)) {
return $res;
}
/*
* First we need to find out which table is the domain table. The domain table
* is the table that actually contains the records of interest. The rest of
* the tables are referred to as 'join' tables.
*/
$domainTable = $related_record->_relationship->getDomainTable();
if (PEAR::isError($domainTable)) {
/*
* Dataface_Relationship::getDomainTable() throws an error if there are
* no join tables. We account for that by explicitly setting the domain
* table to the first table in the list.
*/
$domainTable = $related_record->_relationship->_schema['selected_tables'][0];
}
/*
* Next we construct an IO object to write to the domain table.
*/
$domainIO = new Dataface_IO($domainTable);
$domainTable =& Dataface_Table::loadTable($domainTable);
// reference to the Domain table Dataface_Table object.
/*
* Begin building queries.
*/
$query = array();
// query array to build the query to delete the record.
$absVals = array();
// same as query array except the keys are absolute field names (ie: Tablename.Fieldname)
$currKeyNames = array_keys($domainTable->keys());
// Names of key fields in the domain table
foreach ($currKeyNames as $keyName) {
$query[$keyName] = $related_record->val($keyName);
$absVals[$domainTable->tablename . '.' . $keyName] = $query[$keyName];
}
$fkeys = $related_record->_relationship->getForeignKeyValues($absVals, null, $related_record->_record);
$warnings = array();
$confirmations = array();
foreach (array_keys($fkeys) as $currTable) {
// For each table in the relationship we go through and delete its record.
$io = new Dataface_IO($currTable);
$record = new Dataface_Record($currTable, array());
$res = $io->read($fkeys[$currTable], $record);
//patch for Innodb foreign keys with ON DELELE CASCADE
// Contributed by Optik
if (!$io->recordExists($record, null, $currTable)) {
$warnings[] = df_translate('scripts.Dataface.IO.removeRelatedRecord.ERROR_RECORD_DOESNT_EXIST', "Failed to delete entry for record '" . $record->getTitle() . "' in table '{$currTable}' because record doesn't exist.", array('title' => $record->getTitle(), 'currTable' => $currTable));
unset($record);
unset($io);
continue;
}
// -- end patch for Innodb foreign keys
if ($currTable == $domainTable->tablename and !$delete) {
// Unless we have specified that we want the domain table record
// deleted, we leave it alone!
unset($record);
unset($io);
continue;
}
// Let's figure out whether we need to use security for deleting this
// record.
// If security is on, and it is the domain table, and the user doesn't
// have the 'delete related record' permission then we need to use
// security
if ($currTable == $domainTable->tablename and $secure and !$related_record->_record->checkPermission('delete related record', array('relationship' => $related_record->_relationshipName))) {
$useSecurity = true;
} else {
$useSecurity = false;
}
$res = $io->delete($record, $useSecurity);
if (PEAR::isError($res) && Dataface_Error::isError($res)) {
//$this->logError($res);
return $res;
} else {
if (PEAR::isError($res)) {
$warnings[] = $res;
} else {
$confirmations[] = df_translate('Successfully deleted record', "Successfully deleted entry for record '" . $record->getTitle() . "' in table '{$currTable}'", array('title' => $record->getTitle(), 'table' => $currTable));
}
}
$record->__destruct();
unset($record);
unset($b);
unset($io);
}
$res = $this->fireEvent('afterRemoveRelatedRecord', $related_record);
if (PEAR::isError($res)) {
return $res;
}
if (count($warnings) > 0) {
return PEAR::raiseError(@implode("\n", $warnings), DATAFACE_E_WARNING);
}
if (count($confirmations) == 0) {
return false;
}
return true;
}
function delete($values)
{
require_once 'Dataface/IO.php';
$query = $this->_buildDeleteQuery($values);
if (PEAR::isError($query)) {
return $query;
}
$io = new Dataface_IO($this->_tablename);
$it =& df_get_records($this->_tablename, $query);
$warnings = array();
while ($it->hasNext()) {
$record =& $it->next();
$res = $io->delete($record);
if (PEAR::isError($res) && Dataface_Error::isError($res)) {
// this is a serious error... kill it
return $res;
} else {
if (PEAR::isError($res)) {
// this is a warning or a notice
$warnings[] = $res;
}
}
unset($record);
}
if (count($warnings) > 0) {
return $warnings;
}
return true;
}
