rande/swFormDynamicPlugin

# Dynamic Form Plugin

More information here : [Let's be more dynamic with sfForm](http://rabaix.net/en/articles/2009/02/23/let-s-be-more-dynamic-with-sf-form)

## Installation


* Load the dynamic route (the one in charge of retrieving data)

        [yml]
        all:
          swToolbox:
            routes_register_dynamic: true

* Enabled the swDynamicForm module in the settings.yml file

* Clear the cache

        ./symfony cc

## Usage


A small example of how to refresh values when another one has been changed.

    [php]
    class MediaFileForm extends BaseMediaFileForm
    {
      public function configure()
      {
        $this->widgetSchema['entity_id'] = new sfWidgetFormInputHidden;
        $this->widgetSchema['object_id'] = new sfWidgetFormInputHidden;

        $this->widgetSchema['entity_name'] = new sfWidgetFormInput;
        $this->widgetSchema['entity_label'] = new sfWidgetFormInput;

        $this->validatorSchema['entity_name'] = new sfValidatorPass;
        $this->validatorSchema['entity_label'] = new sfValidatorPass;

        $this->widgetSchema['entity_selector'] = new mgEntitySelectorWidget;
        $this->validatorSchema['entity_selector'] = new sfValidatorPass;

        swToolboxFormDynamicHelper::updateFormElement($this, array(
          'field' => 'entity_selector'
        ));
      }

      public function getDynamicValues($widgetSchema, $field)
      {
        $values = array();

        switch($field)
        {
          case 'entity_selector':
            list($entity_id, $object_id) = explode(',', $this->getDefault('entity_selector'));

            $object = Doctrine::getTable('Entity')->getObject($entity_id, $object_id);

            $values = array(
              'entity_id' => $entity_id,
              'object_id' => $object_id,
              'entity_name' => get_class($object),
              'entity_label' => $object->__toString(),
            );
            break;

          default:

        }

        return $values;
      }
    }