I have a form which has a file upload feature. i want to save the files to System\Models\File. For some reason it adds an entry in the system files table but most of the fields are empty. disk_name, file_name, type etc. what am i missing.

$file = new System\Models\File;
    $file->data = Input::file('proof_of_id');
    $file->is_public = true;
    $file->save();
    $order->files()->add($file);

thanks