private function editAction()
 {
     // no id => redirect home
     if (!array_key_exists('id', $_GET)) {
         $oCategory = new Category();
     } else {
         $iId = intval($_GET['id']);
         $oCategory = CategoryManager::get($iId);
     }
     //  if (array_key_exists('addProduct', $_POST)) {
     if ($_SERVER['REQUEST_METHOD'] == 'POST') {
         $oCategory = new Category();
         $oCategory->setName($_POST['name']);
         $oCategory->setDescription($_POST['description']);
         if (array_key_exists('categories', $_POST)) {
             foreach ($_POST['categories'] as $iCategoryId) {
                 $oCategory->addCategory(CategoryManager::get($iCategoryId));
             }
         }
         if (array_key_exists('category-id', $_POST)) {
             // retourne Id du nouveau produit. Sinon null
             $iCategoryId = $_POST['category-id'];
             $oCategory->setId($iCategoryId);
             CategoryManager::update($oCategory);
         } else {
             // retourne Id du nouveau produit créé. Sinon null
             $iCategoryId = CategoryManager::create($oCategory);
             // Compléter l'objet par l'id du produit créé
             $oCategory->setId($iCategoryId);
         }
         $temp = explode(".", $_FILES["image"]["name"]);
         $ext = $temp[count($temp) - 1];
         $newfilename = "images/category/" . $iCategoryId . '.' . $ext;
         $uploadfile = ROOT . $newfilename;
         move_uploaded_file($_FILES['image']['tmp_name'], $uploadfile);
         $oCategory->setImage($newfilename);
         CategoryManager::update($oCategory);
         require ROOT . 'src/ecommerce/view/category/show.php';
     } else {
         if (null === $oCategory) {
             $this->homeAction();
             return;
         }
         $aCategories = CategoryManager::getAll();
         require ROOT . 'src/ecommerce/view/category/edit.php';
     }
 }