protected function setupInheritance()
 {
     parent::setupInheritance();
     $this->widgetSchema['productos_id'] = new sfWidgetFormFilterInput(array('with_empty' => false));
     $this->validatorSchema['productos_id'] = new sfValidatorSchemaFilter('text', new sfValidatorInteger(array('required' => false)));
     $this->widgetSchema['producto_id'] = new sfWidgetFormDoctrineChoice(array('model' => $this->getRelatedModelName('Producto'), 'add_empty' => true));
     $this->validatorSchema['producto_id'] = new sfValidatorDoctrineChoice(array('required' => false, 'model' => $this->getRelatedModelName('Producto'), 'column' => 'id'));
     $this->widgetSchema->setNameFormat('producto_temporal_filters[%s]');
 }
 protected function setupInheritance()
 {
     parent::setupInheritance();
     $this->widgetSchema->setNameFormat('producto_espejo_filters[%s]');
 }