/**
* Extract minimum set of data to create db reference
* @param AnnotatedInterface $model
* @param string $field
* @param AnnotatedInterface $referenced
*/
public static function extractRef(AnnotatedInterface $model, $field, AnnotatedInterface $referenced = null)
{
if (null === $referenced) {
$referenced = $model->{$field};
}
$dbRef = new DbRef();
$dbRef->pk = PkManager::getFromModel($referenced);
$dbRef->class = get_class($referenced);
return $dbRef;
}
