function save(NFORM $form)
 {
     $values = $form->getValues();
     $langs = Setting::getLangs();
     $id_product = $values['id_product'];
     $table_product_cols = Tools::getCollum('product');
     $table_product_lang_cols = Tools::getCollum('product_lang');
     //ulozenie jazuka
     foreach ($langs as $l) {
         $save_val = array();
         foreach ($table_product_lang_cols as $k => $c) {
             if (isset($values[$c . CategoryFormControl::$_separator . $l['iso']])) {
                 $save_val[$c] = $values[$c . CategoryFormControl::$_separator . $l['iso']];
             }
         }
         //pridanie linky rewrite
         if ($save_val['link_rewrite'] == '') {
             $save_val['link_rewrite'] = NStrings::webalize($values['name' . CategoryFormControl::$_separator . $l['iso']]);
         } else {
             $save_val['link_rewrite'] = NStrings::webalize($save_val['link_rewrite']);
         }
         ProductModel::save($save_val, $id_product, $l['id_lang']);
     }
     //ulozenie zakladnych hodnot
     $save_val = array();
     foreach ($table_product_cols as $p) {
         if (isset($values[$p])) {
             $save_val[$p] = $values[$p];
         }
     }
     ProductModel::save($save_val, $id_product, $l['id_lang']);
     //ulozit param
     /*
      * Iba ak je product bez parametrov
      */
     $val_product_param = Tools::getValuesForTable('product_param', $values);
     //prvy parameter
     $id_product_param = dibi::fetchSingle("SELECT id_product_param FROM [product_param] WHERE id_product = %i", $id_product, "ORDER BY sequence");
     ProductModel::setProductParamValue($val_product_param, $id_product_param);
     ProductModel::saveProductAlternative($id_product, $values['product_alternative']);
     dibi::begin();
     ProductModel::deleteProductFromCategories($id_product);
     ProductModel::addProductToCategory($values['id_categories'], $id_product);
     dibi::commit();
     ProductModel::invalidateCache();
     $this->flashMessage(_('Produkt bol uložený'));
     if ($form['btn_save']->isSubmittedBy()) {
         $s = NEnvironment::getSession("Admin_Eshop");
         $back_url = $s['back_url'];
         if ($back_url != '') {
             $this->redirectUrl($back_url);
         } else {
             $this->redirect('Eshop:default');
         }
     } else {
         $this->redirect('this');
     }
 }