gistfile1.php

<?php

class BaseForm extends sfFormSymfony
{
 static protected $user = null;

 static public function getUser()
 {
   return self::$user;
 }

 static public function getValidUser()
 {
   if (!self::$user instanceof sfGuardSecurityUser)
   {
     throw new RuntimeException('No valid user instance available');
   }

   return self::$user;
 }

 static public function setUser(sfGuardSecurityUser $user)
 {
   self::$user = $user;
 }
}

gistfile2.php

<?php

class OrdinativiHealthStateForm extends BaseOrdinativiHealthStateForm
{

  public function configure()
  {
    $this->useFields(array('name'));
    $this->widgetSchema->setLabels(array(
        'name'    => 'Nome',
        ));
  }
  

  protected function doSave($con = null)
  {

    $user = self::getValidUser();
    
     if (is_null($con))
     {
       $con = $this->getConnection();
     }


     $this->updateObject(array('user_id'=>$user->getGuardUser()->getId(), 'name'=>'prova, verrà sostituita dal campo del form'));

     $this->object->save($con);

     $this->saveEmbeddedForms($con);
    return parent::doSave($con);
  }

  public function updateObject($values = null)
  {
    $object = parent::updateObject($values);

    return $object;
  }
  
}