Checking how many fields have changed upon saving a form - symfony1

Question

I am saving records in a transaction using symfony1.4 and Doctrine.
The rows inserted are coming from a CSV file which is updated regularly. I have already got a method that checks if the records in the CSV match that in the DB and do not insert.
What I'm ideally wanting to do though, is to set a user flash telling them how many rows have been updated whenever they import the CSV file.
$conn = ProductTable::getInstance()->getConnection();
$conn->beginTransaction();
try {
$row = 1;
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
if ($row > 1) {
$values = array(
'blah' => null
);
$obj= ProductTable::getInstance()->findOrCreateNewProduct(
$values['blah']
);
$obj->merge($values);
$obj->save($conn);
}
$row++;
}
$conn->commit();
} catch (Doctrine_Exception $e) {
$conn->rollback();
throw $e;
}
I'm wondering how I'd get these updated fields. Is it in the actions.class.php or is it in the actual form.class.php file?
Thanks

Answer 1

On the you can call a Doctrine_Record::getModified() which will give you an array of fields modified (with their values though that doesnt matter for you). Then you can call count on the returned array and keep a cumulative total outside your loop.
$conn = ProductTable::getInstance()->getConnection();
$conn->beginTransaction();
$nbModified = 0;
try {
$row = 1;
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
if ($row > 1) {
$values = array(
'blah' => null
);
$obj= ProductTable::getInstance()->findOrCreateNewProduct(
$values['blah']
);
$obj->merge($values);
$nbModified += count($obj->getModified());
$obj->save($conn);
}
$row++;
}
$conn->commit();
// return $nbModified or otherwise do something with it here
} catch (Doctrine_Exception $e) {
$conn->rollback();
// youre rolling back so just for consistency set $nbModified to zero
$nbModified = 0;
throw $e;
}