[Deprecated] DMZ 1.5.4 (DataMapper OverZealous Edition)

[eluser]Alface[/eluser]
I'm having a big problem here, I just can't find a way to auto validate the relational object of Videosalbum, Video object.. it just don't show me any erros, I think thats because I'm using $va->trans_status() than $va->save() as well..

Anyone can help me?
Controller:

Code:

function videosalbum($id = NULL, $apagar = NULL){
        $va = new Videosalbum($id);
        $v = new Video();
        if($apagar=='apagar' && $id != NULL){
            $va->delete();
            redirect(__CLASS__.'/listar/'.__FUNCTION__);
        }

        if($_POST){
            $va->from_array($_POST);

            $va->trans_start();
            foreach($this->input->post('videos') as $vId => $video){
                if($vId == 'novos'){
                    foreach($video as $novos){
                        $v->from_array($novos);
                        if($v->validate()){
                            // Se o campo estiver preenchido então salva
                            $v->id = NULL;
                            $v->save();
                            $va->save($v);
                        }
                            
                    }
                }else{
                    $v->from_array($video);
                    $v->id = $vId;
                    if($v->url){
                        // Se o campo estiver preenchido então salva
                        $v->save();
                        $va->save($v);
                    }else{
                        // Se o campo estiver em branco então apaga
                        $v->delete();
                    }
                }
                
            }
            if ($va->trans_status() === FALSE){
                $va->trans_rollback();
            }else{
                $va->trans_commit();
                echo '<p>Valores:</p>';
                echo '<code><strong>ID</strong>: ' . $va->id . '<br />' .
                '<strong>nome</strong>: ' . $va->nome . '</code>';
                //redirect(__CLASS__.'/listar/'.__FUNCTION__);
            }
        }

        $data['data']['campos'] = array('Informa&ccedil;&otilde;es do Album de video' => 'section',
                                        'nome',
                                        'videos'
                                    );
        $data['data']['url'] = __CLASS__.'/'.__FUNCTION__.(empty($object->id))?'':'/'.$object->id;
        $data['content'] = __CLASS__.'/'.__FUNCTION__;
        $data['data']['va'] = $va;
        $this->load->view('layout', $data);
    }