Код товара - автоматическая генерация.

            if ($post['alias_'.$lang->language]!="" && !$_alias->checkExistAlias2Group($post['alias_'.$lang->language], $lang->language, $post['product_id'])){
                $post['alias_'.$lang->language] = "";
                JError::raiseWarning("", _JSHOP_ERROR_ALIAS_ALREADY_EXIST);
            }

            if ($post['alias_'.$lang->language]!="" && !$_alias->checkExistAlias2Group($post['alias_'.$lang->language], $lang->language, $post['product_id'])){
                $post['alias_'.$lang->language] = "";
                JError::raiseWarning("", _JSHOP_ERROR_ALIAS_ALREADY_EXIST);
            }else{
            	$post['alias_'.$lang->language] = "Тут писать любой Псевдоним, который применится если значение оставить пустым";
            }

<td class="key">
         <?php echo _JSHOP_EAN_PRODUCT;?>
       </td>
       <td>
         <input type = "text" name = "product_ean" id = "product_ean" value = "<?php echo $row->product_ean?>" onkeyup="updateEanForAttrib()"; />
       </td>

<td class="key">
         <?php echo _JSHOP_EAN_PRODUCT;?>
       </td>
       <td>
         <input type = "text" name = "product_ean" id = "product_ean" value = "<?php if ($row->product_ean == ""){ echo 'test00' , $row->product_id;} else {echo $row->product_ean;} ?>" onkeyup="updateEanForAttrib()"; />    
       </td>

$post[$product_ean] = $product_ean;

        $product_id = $product->product_id;

        if (!$post['product_ean']) {
        	$manufacturer_id = 0;
        	if (isset($post['product_manufacturer_id'])){
        		$manufacturer_id = $post['product_manufacturer_id'];
        	}
        	$product->product_ean = "M[".$manufacturer_id."]P[".$product_id."]";
        }
        if (!$product->store()){
            JError::raiseWarning("",_JSHOP_ERROR_SAVE_DATABASE."<br>".$product->_error);
            $this->setRedirect("index.php?option=com_jshopping&controller=products&task=edit&product_id=".$product->product_id);
            return 0;
        }

if ($jshopConfig->create_alias_product_category_auto && $post['alias_'.$lang->language]=="") $post['alias_'.$lang->language] = $post['name_'.$lang->language];

 if ($post['alias_'.$lang->language]!="" && !$_alias->checkExistAlias2Group($post['alias_'.$lang->language], $lang->language, $post['product_id'])){
                $post['alias_'.$lang->language] = "";
                JError::raiseWarning("", _JSHOP_ERROR_ALIAS_ALREADY_EXIST);
            }else{
            	$post['alias_'.$lang->language] = "Тут писать любой Псевдоним, который применится если значение оставить пустым";
            }

$post['alias_'.$lang->language] = JApplication::stringURLSafe($post['alias_'.$lang->language]);

$post['alias_'.$lang->language] = JApplication::stringURLSafe($post['alias_'.$lang->language]."-".$post['product_ean']);

            $post['alias_'.$lang->language] = JApplication::stringURLSafe($post['alias_'.$lang->language]);
            if ($post['alias_'.$lang->language]!="" && !$_alias->checkExistAlias2Group($post['alias_'.$lang->language], $lang->language, $post['product_id'])){
                //Удалить эту строчку очищающую алиас
                $post['alias_'.$lang->language] = "";
                //Добавляем свое формирование алиаса, если такой алиас уже существует
                $post['alias_'.$lang->language] = JApplication::stringURLSafe($post['alias_'.$lang->language]."-".$post['product_ean']);
                //Сообщение о существовании такого псевдонима можно удалить.
                JError::raiseWarning("", _JSHOP_ERROR_ALIAS_ALREADY_EXIST);
            }

<?php


defined( '_JEXEC' ) or die;

class plgJshoppingAdminGenerate_Alias extends JPlugin {

	private function generateAlias($type) {
		if (!isset($_POST['task']) || $_POST['task']!='generateAlias') {
			return;
		}
		$app = JFactory::getApplication();
		$cid = $app->input->get('cid', array(), 'array');
		if (!count($cid)) {
			$app->enqueueMessage(JText::_('JLIB_HTML_PLEASE_MAKE_A_SELECTION_FROM_THE_LIST'), 'error');
			return;
		}

		if ($type == 'category') {
			$table_name = '`#__jshopping_categories`';
		} else if ($type == 'manufacturer') {
			$table_name = '`#__jshopping_manufacturers`';
		} else {
			$table_name = '`#__jshopping_products`';
		}
		$select_id = $type.'_id';

		$replace = $this->params->get('replace', 0);
		$db = JFactory::getDBO();
		$query = $db->getQuery(true)
				->select('language')
				->from('#__jshopping_languages')
				->where('1');
		$db->setQuery($query);
		$allLanguage = $db->loadColumn();
		if (!count($allLanguage)) {
			$app->enqueueMessage(JText::_('PLG_JSHOPPINGADMIN_GENERATE_ALIAS_NO_LANGUAGE'), 'warning');
			return;
		}

		$select = array();
		foreach ($allLanguage as $language) {
			$select[] = '`name_'.$language.'`';
			$select[] = '`alias_'.$language.'`';
		}
		$query = $db->getQuery(true)
				->select($select_id.' as id,'.implode(',', $select))
				->from($table_name)
				->where($select_id.' IN ('.implode(',', $cid).')');
		$db->setQuery($query);
		$elements = $db->loadObjectList();
		
		if (!count($elements)) {
			$app->enqueueMessage(JText::_('PLG_JSHOPPINGADMIN_GENERATE_ALIAS_NO_ELEMENTS'), 'warning');
			return;
		}

		$query = 'CREATE TEMPORARY TABLE `jshopping_temp_table_for_generate_aliases` (id INT, '.implode(' VARCHAR(255),', $select).' VARCHAR(255), PRIMARY KEY (`id`)) DEFAULT CHARACTER SET utf8';
		$db->setQuery($query);
		$db->execute();
		
		$insertValues = $updateValues = array();
		$generated = 0;
		foreach ($elements as $element) {
			$insertValue = array();
			$insertValue[] = $element->id;
			foreach ($allLanguage as $language) {
				$name = 'name_'.$language;
				$alias = 'alias_'.$language;
				$insertValue[] = $element->$name;
				if ($element->$alias == '' || $replace) {
					if ($element->$name != '') {
						$insertValue[] = JApplication::stringURLSafe($element->$name);
						$generated++;
					} else {
						$insertValue[] = '';
					}
				} else {
					$insertValue[] = $element->$alias;
				}
				$updateValues[] = $table_name.'.'.'`'.$alias.'` = jshopping_temp_table_for_generate_aliases.`'.$alias.'`';
			}
			$insertValues[] = '("'.implode('","', $insertValue).'")';
		}
		$query = 'INSERT INTO jshopping_temp_table_for_generate_aliases VALUES '.implode(',', $insertValues);
		$db->setQuery($query);
		$db->execute();

		$query = $db->getQuery(true)
				->update($table_name.', jshopping_temp_table_for_generate_aliases')
				->set($updateValues)
				->where('jshopping_temp_table_for_generate_aliases.id = '.$table_name.'.'.$select_id);
		$db->setQuery($query);
		$result = $db->execute();
		
		$app->enqueueMessage(JText::_('PLG_JSHOPPINGADMIN_GENERATE_ALIAS_UPDATE').$generated);
	}

	private function init($type) {
		JFactory::getLanguage()->load('plg_jshoppingadmin_generate_alias', dirname(__FILE__));
		JToolBarHelper::custom('generateAlias', 'refresh', 'refresh', JText::_('PLG_JSHOPPINGADMIN_GENERATE_ALIAS_BUTTON'), true);
		$this->generateAlias($type);
	}

	function onBeforeDisplayListCategoryView(&$view) {
		$this->init('category');
	}

	function onBeforeDisplayManufacturers(&$view) {
		$this->init('manufacturer');
	}

	function onBeforeDisplayListProductsView(&$view) {
		$this->init('product');
	}

}
?>

$insertValue[] = JApplication::stringURLSafe($element->$name);