php - Opencart: admin category list display by user_id

i have 3 users my opencart admin, as follows:

• user_id=1
• user_id=2
• user_id=3

what my question is, ifuser_id=1 User add some categories to admin category list (eg: computer, cellphone, tab, etc.) whenuser_id=2 or other users login time no need to display... i mean what each users added to categories lists, that only show when they logged their user account... dont allow to show other users...

sql

public function getCategories($parent_id = 0) {
    $category_data = $this->cache->get('category.' . (int)$this->config->get('config_language_id') . '.' . (int)$parent_id);

    if (!$category_data) {
        $category_data = array();

        $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "category c LEFT JOIN " . DB_PREFIX . "category_description cd ON (c.category_id = cd.category_id) WHERE c.parent_id = '" . (int)$parent_id . "' AND cd.language_id = '" . (int)$this->config->get('config_language_id') . "' ORDER BY c.sort_order, cd.name ASC");

        foreach ($query->rows as $result) {
            $category_data[] = array(
                'category_id' => $result['category_id'],
                'name'        => $this->getPath($result['category_id'], $this->config->get('config_language_id')),
                'status'      => $result['status'],
                'sort_order'  => $result['sort_order']
            );

            $category_data = array_merge($category_data, $this->getCategories($result['category_id']));
        }   

        $this->cache->set('category.' . (int)$this->config->get('config_language_id') . '.' . (int)$parent_id, $category_data);
    }

    return $category_data;
}
Copy code

any idea.?? thanks...