Dynamically change the embedd form field value - Symfony 1.4

Question

I have a question about Symfony embed form. Basically i have form called Media. Media field will save user image, product image and etc.

Media Scheme:

Media:
  actAs:
    Timestampable: ~    
  columns:
    entity:
      type: string(60)
      notnull: true
    entity_id:
      type: bigint(20)
      notnull: true
    file:
      type: string(255)
      notnull: true 

Here,

• entity = product or user or etc
• entity_id = product_id or user_id or etc

So, i want to change entity values dynamically depends upon where i am calling these form.

 $this->embedForm('media', new MediaForm());

So, i want to change the field value from here or Advice me if there is any better way.

Answer 1

In order to save a Media object an id is needed, so save can be done after the "parent" object was saved. I think the best option you have is the saveEmbeddedFroms() method (in the form which the MediaForm is embedded into):

public function saveEmbeddedForms($con = null, $forms = null)
{
  if (isset($this->embeddedForms['media']))
  {
    $mediaForm = $this->getEmbeddedForm('media');

    if ($mediaForm instanceof MediaForm && $mediaForm instanceof sfFormDoctrine)
    {
      $mediaFrom
        ->getObject()
        ->set('entity', get_class($this->getObject()))
        ->set('entity_id', $this->getObject()->get('id'))
      ;
    }
  }

  parent::saveEmbeddedForms($con, $forms);
}

Actually you can put this into the BaseFormDoctrine class as well, so every doctrine form which has an embedded MediaForm will be saved correctly.

Edit: Finally sfFormObject works for me

public function saveEmbeddedForms($con = null, $forms = null)
{
  if (null === $con)
  {
  $con = $this->getConnection();
  }

  if (null === $forms)
  {
  $forms = $this->embeddedForms;
  }

  foreach ($forms as $form)
  {

    if ($form instanceof sfFormObject)
    {
      $form->getObject()->set('entity', get_class($this->getObject()))->set('entity_id', $this->getObject()->get('id'));
    }    


  }
  return parent::saveEmbeddedForms($con, $forms);
}