gistfile1.php

<?php

// nella form class
class OrdinativiMenuFoodForm extends BaseOrdinativiMenuItemDayForm
{
  public function configure()
  {

      $this->removeFields();
      
      // choices
      $menu_item = new OrdinativiMenuItem();
      $food_choices = $menu_item->getFoodChoices();


      $this->widgetSchema['menu_id'] = new sfWidgetFormInputHidden();
      $this->widgetSchema['menu'] = new sfWidgetFormInputHidden();
      $this->widgetSchema['week'] = new sfWidgetFormInputHidden();
      $this->widgetSchema['day']  = new sfWidgetFormInputHidden();

      $this->widgetSchema['food'] = new sfWidgetFormChoice(array(
        'choices'        => $food_choices,
        'expanded' => false,
        'multiple' => true,
        'label'=> ' '
        ), array('class'=>'multiselect', 'style'=>'width:500px;'));
        
/* provato anche internamente ma non funziona
     if($this->getOption('food')){
           dbg($this->getOption('food'));
        $this->setDefault( 'food' , $this->getOption('food'));
     }
*/
        
      $this->widgetSchema->setHelp('food', 'Il menù attuale è rappresentato nella colonna di sinistra');
        
      $this->setValidator('food',new sfValidatorChoice(array('choices' => $food_choices )) );
      $this->setValidator('menu',new sfValidatorInteger(array('required'   => 'The menu field is required')) );
      $this->setValidator('week',new sfValidatorInteger(array('required'   => 'The week field is required')));
      $this->setValidator('day',new sfValidatorInteger(array('required'   => 'The day field is required')));
  }
}
  


// nella action
      $this->form = new OrdinativiMenuFoodForm(new OrdinativiMenuItemDay(), array('food'=>$food_defaults));
      $this->form->setDefaults( array(
          'food' => $food_defaults,
          'menu' => $this->getRoute()->getObject()->getId(),
          'week' => $request->getParameter('week'),
          'day' => $request->getParameter('day')
        )
      );

//  $food_choices

array(6) {
  [1]=>
  string(14) "PASTA AL PESTO"
  [2]=>
  string(17) "PASTA AL POMODORO"
  [3]=>
  string(23) "FRITTATINA AL FORMAGGIO"
  [4]=>
  string(14) "LONZA AL FORNO"
  [5]=>
  string(7) "Piselli"
  [6]=>
  string(19) "Insalatona classica"
}

//  $food_defaults

array(4) {
  [2]=>
  string(17) "PASTA AL POMODORO"
  [3]=>
  string(23) "FRITTATINA AL FORMAGGIO"
  [4]=>
  string(14) "LONZA AL FORNO"
  [5]=>
  string(7) "Piselli"
}