<?php

class ProduktKolory extends DataObject {

static $db = array(
'Nazwa' => 'Varchar',
'URL' => 'Varchar'
);
static $has_one = array(
'Produkt' => 'Produkt',
'Kolor' => 'ModulKolory'
);

public function getCMSFields_forPopup() {

$source_kolory = DataObject::get('ModulKolory');
$kolory = $source_kolory->toDropDownMap('IkonaID','Nazwa');

return new FieldSet(
new DropdownField('KolorID','Wybierz kolor:',$kolory)
);
}

public function onAfterWrite() {

$filter = "IkonaID = $this->KolorID";
$kolor = DataObject::get_one('ModulKolory',$filter);

$filter = "ID = $this->KolorID";
$file = DataObject::get_one('File',$filter);

$filter = "ID = $this->ID";
$produkt_kolor = DataObject::get_one('ProduktKolory',$filter);
$produkt_kolor->Nazwa = $kolor->Nazwa;

$produkt_kolor->URL = $file->Filename;
$produkt_kolor->write();

return parent::onAfterWrite();

}

}

?>

but when i save new rocord the Apache server get lost

function onAfterWrite() {
      $fields = $this->getField($this->dbObject("Region1"));
      $this->setField("Regions", $fields );
      $this->write();
      return parent::onAfterWrite();
}