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<?php
/**
* @package Joomla.Platform
* @subpackage Form
*
* @copyright Copyright (C) 2005 - 2014 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* Form Rule class for the Joomla Platform.
*
* @package Joomla.Platform
* @subpackage Form
* @since 11.1
*/
class JFormRuleEmail extends JFormRule
{
/**
* The regular expression to use in testing a form field value.
*
* @var string
* @since 11.1
*/
protected $regex = '^[a-zA-Z0-9.!#$%&’*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$';
/**
* Method to test the email address and optionally check for uniqueness.
*
* @param SimpleXMLElement &$element The SimpleXMLElement object representing the <field /> tag for the form field object.
* @param mixed $value The form field value to validate.
* @param string $group The field name group control value. This acts as as an array container for the field.
* For example if the field has name="foo" and the group value is set to "bar" then the
* full field name would end up being "bar[foo]".
* @param JRegistry &$input An optional JRegistry object with the entire data set to validate against the entire form.
* @param object &$form The form object for which the field is being tested.
*
* @return boolean True if the value is valid, false otherwise.
*
* @since 11.1
* @throws JException on invalid rule.
*/
public function test(&$element, $value, $group = null, &$input = null, &$form = null)
{
// If the field is empty and not required, the field is valid.
$required = ((string) $element['required'] == 'true' || (string) $element['required'] == 'required');
if (!$required && empty($value))
{
return true;
}
// Test the value against the regular expression.
if (!parent::test($element, $value, $group, $input, $form))
{
return false;
}
// Check if we should test for uniqueness.
$unique = ((string) $element['unique'] == 'true' || (string) $element['unique'] == 'unique');
if ($unique)
{
// Get the database object and a new query object.
$db = JFactory::getDBO();
$query = $db->getQuery(true);
// Build the query.
$query->select('COUNT(*)');
$query->from('#__users');
$query->where('email = ' . $db->quote($value));
// Get the extra field check attribute.
$userId = ($form instanceof JForm) ? $form->getValue('id') : '';
$query->where($db->quoteName('id') . ' <> ' . (int) $userId);
// Set and query the database.
$db->setQuery($query);
$duplicate = (bool) $db->loadResult();
// Check for a database error.
if ($db->getErrorNum())
{
JError::raiseWarning(500, $db->getErrorMsg());
}
if ($duplicate)
{
return false;
}
}
return true;
}
}