class hogeActions extends autoHogeActions
{
    public function executeUpdate(sfWebRequest $request)
    {
        $this->forward404Unless($request->isMethod('put'));
        
        $this->hoge = $this->getRoute()->getObject();
        $this->form = $this->configuration->getForm($this->hoge);
        
        if ($this->form->bindAndSave($request->getParameter($this->form->getName()), $request->getFiles($this->form->getName()))) {
            $this->redirect('hoge');
        }
        
        $this->setTemplate('edit');
    }
}

class BackendHogeForm extends HogeForm
{
    public function configure()
    {
        parent::configure();

        // 使用するフィールドを指定
        $this->useFields(array('status'));
        
        // 別モデルのIDリストを選択するフォームを作成する
        $choices = array(100 => '100:value1', 101 => '101:value2');
        $this->widgetSchema['other_model_id'] = new sfWidgetFormSelect(array('choices' => $choices));
        $this->validatorSchema['other_model_id'] = new sfValidatorChoice(array('choices' => array_keys($choices)));
    }

    protected function doSave($con = null)
    {
        if ($this->getValue('status') == 'DONE') {
            Doctrine::getTable('OtherModel')->find($this->getValue('other_model_id'))
                ->setIsSelected(TRUE)
                ->save();
        }
        return parent::doSave($con);
    }
}