Create photo to album

AlbumController.php

<?php
$album = new Album;
                        $photo = new Photo;
                        if(isset($_POST['id']))
                            $album = $this->getEntityManager()->getRepository('Admin\Entity\Album')->find($this -> params() -> fromPost('id'));

                        $photo -> setDate(date_create($_POST['date_photo']));
                        $photo -> setDescription($_POST['description_photo']);
                        $photo -> setMainPhoto($novo_nome);

                        $album -> assignedToPhoto($photo);

                        if(!isset($_POST['id']))
                        {
                            $album -> setTitle("Album incompleto.");
                            $album -> setStatus(2);
                        }

                        $em = $this->getEntityManager();
                        $em -> persist($album);
                        $em -> persist($photo);
                        $em -> flush();

                        $id_album = (isset($_POST['id']) ? $_POST['id'] : $album -> getId());
                        $id_photo = $photo -> getId();