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<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.0.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Routing\Filter;
use Cake\Event\Event;
use Cake\I18n\I18n;
use Cake\Routing\DispatcherFilter;
use Locale;
/**
* Sets the runtime default locale for the request based on the
* Accept-Language header. The default will only be set if it
* matches the list of passed valid locales.
*/
class LocaleSelectorFilter extends DispatcherFilter
{
/**
* List of valid locales for the request
*
* @var array
*/
protected $_locales = [];
/**
* Constructor.
*
* @param array $config Settings for the filter.
* @throws \Cake\Core\Exception\Exception When 'when' conditions are not callable.
*/
public function __construct($config = [])
{
parent::__construct($config);
if (!empty($config['locales'])) {
$this->_locales = $config['locales'];
}
}
/**
* Inspects the request for the Accept-Language header and sets the
* Locale for the current runtime if it matches the list of valid locales
* as passed in the configuration.
*
* @param \Cake\Event\Event $event The event instance.
* @return void
*/
public function beforeDispatch(Event $event)
{
/* @var \Cake\Http\ServerRequest $request */
$request = $event->getData('request');
$locale = Locale::acceptFromHttp($request->getHeaderLine('Accept-Language'));
if (!$locale || (!empty($this->_locales) && !in_array($locale, $this->_locales))) {
return;
}
I18n::setLocale($locale);
}
}