symfony - saving blob data image sizes - symfony-1.4

Question

I have a form, PhotoForm, which has an emebedded BlobDataForm.
I can save the blbo data fine, my problem comes, with the blob_data table.
I have 2 fields, image_width and image_height.
I'd like to save these details as well, when the blob is saved.
I have overridden doSave();
protected function doSave($con = null)
{
if (null === $con)
{
$con = $this->getConnection();
}
$this->updateObject();
$blobData = new BlobData();
$this->saveEmbeddedForms($con);
$this->getObject()->setBlobData($this->getEmbeddedForm('blob_data')->getObject());
$this->getObject()->save($con);
}
Would I need to override saveEmbeddedForms() as well?
Thanks
EDIT:
Ok, so it seems i need to override:
processValues()
I'm just having trouble getting the images width and height attributes.
Does anyone know how I'd do that?
Thanks

Answer 1

If you can get this 2 informations from your blob_data field, you can override the preSave method of your BlobData class which is called just before saving object :
public function preSave($event)
{
//get the information from the blob_data
$this->image_width = ... ;
$this->image_height = ... ;
}

Answer 2

Right, so after all that, I had to override saveEmbeddedForms:
public function saveEmbeddedForms($con = null, $forms = null)
{
if (null === $con)
{
$con = $this->getConnection();
}
if (null === $forms)
{
$photos = $this->getValue('blob_data');
$forms = $this->embeddedForms;
foreach ($this->embeddedForms['blob_data'] as $name => $form)
{
if (!isset($photos[$name]))
{
unset($forms['blob_data'][$name]);
}
}
}
foreach ($forms as $form)
{
if ($form instanceof sfFormObject)
{
$form->saveEmbeddedForms($con);
$blobData = $form->getObject()->getBlobData();
$imageStream = stream_get_contents($blobData);
$image = imagecreatefromstring($imageStream);
$form->getObject()->setImageWidth(imagesx($image));
$form->getObject()->setImageHeight(imagesy($image));
$form->getObject()->setFileExtension('jpg');
//return parent::preSave($con);
$form->getObject()->save($con);
}
else
{
$this->saveEmbeddedForms($con, $form->getEmbeddedForms());
}
}
}
This seemed to work for me
Thanks