/**
* Save (update) model to database
*
* Only modified fields will be updated
* Triggers NOTICE when no need to update
*
* @return mixed model's primary key value
*/
public function update()
{
$update = array();
foreach ($this->fields as $key => $field) {
$finalColumn = $field->getRealName() . '%' . $field->getType();
if ($field->isPrimaryKey()) {
$primaryKey = $field->getRealName();
$primaryKeyValue = $field->getDbValue(false);
$primaryKeyType = $field->getType();
} elseif (!is_null($dbValue = $field->getDbValue(false)) && $field->isModified()) {
$update[$finalColumn] = $dbValue;
} elseif ($field->getNullCallback()) {
$update[$finalColumn] = $dbValue;
}
}
if (count($update) > 0) {
#Debug::barDump($update, 'update array');
PerfORMController::queryAndLog('update %n set', $this->getTableName(), $update, "where %n = %{$primaryKeyType}", $primaryKey, $primaryKeyValue);
$this->setUnmodified();
return $primaryKeyValue;
} else {
trigger_error("The model '" . get_class($this) . "' has no unmodified data to update", E_USER_NOTICE);
}
}
