.-.-.-.-.-

<?php

/**
 * @author          Tassos Marinos <info@tassos.gr>
 * @link            http://www.tassos.gr
 * @copyright       Copyright © 2021 Tassos Marinos All Rights Reserved
 * @license         GNU GPLv3 <http://www.gnu.org/licenses/gpl.html> or later
*/

// No direct access to this file
// 
defined('_JEXEC') or die;
jimport('joomla.form.helper');
JFormHelper::loadFieldClass('list');

class JFormFieldAkeebaSubs extends JFormFieldList
{
    /**
     * Method to get a list of options for a list input.
     *
     * @return      array           An array of JHtml options.
     */
    protected function getOptions() 
    {
        if (!NRFramework\Extension::isInstalled('akeebasubs'))
        {
            return;
        }

$lists = $this->getLevels();

if (!count($lists))
        {
            return;
        }

$options = array();

foreach ($lists as $option)
        {
            $options[] = JHTML::_('select.option', $option->id, $option->name);
        }

return array_merge(parent::getOptions(), $options);
    }

/**
     *  Retrieve all Akeeba Subscription Levels
     *
     *  @return  array  Subscription Levels
     */
    private function getLevels()
    {
        // Get a db connection.
        $db = JFactory::getDbo();
        
        $query = $db->getQuery(true)
            ->select('l.akeebasubs_level_id as id, l.title AS name, l.enabled as published')
            ->from('#__akeebasubs_levels AS l')
            ->where('l.enabled > -1')
            ->order('l.title, l.akeebasubs_level_id');
        $db->setQuery($query);
        
        return $db->loadObjectList();
    }
}

/home/chauffn/vuzelia/2023/cf455/../plugins/system/nrframework/fields/akeebasubs.php