champs personnalisés et clé unique

<?php

/**
 * @package	HikaShop for Joomla!
 * @version	4.4.0
 * @author	hikashop.com
 * @copyright	(C) 2010-2020 HIKARI SOFTWARE. All rights reserved.
 * @license	GNU/GPLv3 http://www.gnu.org/licenses/gpl-3.0.html
 */
defined('_JEXEC') or die('Restricted access');
?><?php


class plgHikashop_matricule extends JPlugin {

	function onBeforeHikaUserRegistration(&$data, $input_data, $mode) {
 
		$app = JFactory::getApplication();
				if(version_compare(JVERSION,'4.0','>=')) {
			if($app->isClient('administrator'))
				return true;
		} else {
			if($app->isAdmin())
				return true;
			
		}


		$data['status'] = $this->checkMatricule(false);
		if(!$data['status'])
			$data['messages']['matricule'] = "Ce matricule existe déjà dans la base";
	}

function checkMatricule(&$data){

	$user = JFactory::getUser();
		if ($user->guest) {
			return true;
		}

		// Get a db connection.
		$db = JFactory::getDbo();

		// Create a new query object.
		$query = $db->getQuery(true);

		// Select all records from the user profile table where key begins with "custom.".
		// Order it by the ordering field.
		$query->select(array('user_matricule'));
		$query->from('#__hikashop_user');
		

		// Reset the query using our newly populated query object.
		$db->setQuery($query);

		// Load the results as a list of stdClass objects (see later for more options on retrieving data).
		$results = $db->loadColumn();

	
	if($data['user']['user_matricule'] === $results) {
			return false;
		}else {
			return true;
		}


	}


	
}

<?php

/**
 * @package	HikaShop for Joomla!
 * @version	4.4.0
 * @author	hikashop.com
 * @copyright	(C) 2010-2020 HIKARI SOFTWARE. All rights reserved.
 * @license	GNU/GPLv3 http://www.gnu.org/licenses/gpl-3.0.html
 */
defined('_JEXEC') or die('Restricted access');
?><?php


class plgSystemMatricule extends JPlugin {
	

	function onBeforeHikaUserRegistration(&$data, $input_data, $mode) {
		

		$data['status'] = $this->checkMatricule(false);
		if(!$data['status'])
			$data['messages']['matricule'] = "stop";


}



function checkMatricule(&$data){

	
	if($data['user']['user_matricule'] === "E5099999") {
			return false;

	}else{
			return true;
		}





	 }

}