#1016 - Использовать файл Sitemap для отображения версий страниц на другом языке

frontend/views/layouts/head.php

-	<meta name="title" content="<?php echo \Yii::$app->controller->meta_title?>">
-	<meta name="keywords" content="<?php echo \Yii::$app->controller->meta_keywords?>">
-	<meta name="description" content="<?php echo \Yii::$app->controller->meta_description?>">
+<?php 
 
-	<meta name='yandex-verification' content='6f739356d418cfe3' />
+use common\modules\languages\models\Languages;
 
-	<link rel="shortcut icon" href="/favicon.ico" type="image/x-icon">
-	<link rel="apple-touch-icon" href="/images/favicon/apple-touch-icon.png">
-	<link rel="apple-touch-icon" sizes="72x72" href="/images/favicon/apple-touch-icon-72x72.png">
-	<link rel="apple-touch-icon" sizes="114x114" href="/images/favicon/apple-touch-icon-114x114.png">
+$langs = Languages::find()->all();
+?>	
 
-	<meta http-equiv="X-UA-Compatible" content="IE=edge">
-	<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
+<meta name="title" content="<?php echo \Yii::$app->controller->meta_title?>">
+<meta name="keywords" content="<?php echo \Yii::$app->controller->meta_keywords?>">
+<meta name="description" content="<?php echo \Yii::$app->controller->meta_description?>">
 
-	<?php $this->registerCssFile('/css/animate.css');?>
-	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
+<meta name='yandex-verification' content='6f739356d418cfe3' />
 
-	<?php $this->registerCssFile('/js/libs/bootstrap/css/bootstrap.css');?>
-	<?php $this->registerCssFile('/js/libs/magnific/magnific-popup.css');?>
-	<?php $this->registerCssFile('/js/libs/bxslider/jquery.bxslider.css');?>
+<?php if($langs) :
+    foreach ($langs as $lang) : $url = \Yii::$app->request->getLangUrl(); ?>
+    	<link rel="alternate" hreflang="<?=$lang->url?>" href="<?= yii\helpers\Url::to((!$lang->default?'/'.$lang->url:'').($url=='/'?'':'/'.$url), true) ?>" />
+    <?php endforeach;
+endif; ?>
 
-	<?php $this->registerCssFile('/css/fonts.css');?>
-	<?php $this->registerCssFile('/css/screen.css');?>
-	<?php $this->registerCssFile('/css/media.css');?>
-	<?php $this->registerCssFile('/css/custom.css');?>
+<link rel="shortcut icon" href="/favicon.ico" type="image/x-icon">
+<link rel="apple-touch-icon" href="/images/favicon/apple-touch-icon.png">
+<link rel="apple-touch-icon" sizes="72x72" href="/images/favicon/apple-touch-icon-72x72.png">
+<link rel="apple-touch-icon" sizes="114x114" href="/images/favicon/apple-touch-icon-114x114.png">
\ No newline at end of file
+
+<meta http-equiv="X-UA-Compatible" content="IE=edge">
+<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
+
+<?php $this->registerCssFile('/css/animate.css');?>
+<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
+
+<?php $this->registerCssFile('/js/libs/bootstrap/css/bootstrap.css');?>
+<?php $this->registerCssFile('/js/libs/magnific/magnific-popup.css');?>
+<?php $this->registerCssFile('/js/libs/bxslider/jquery.bxslider.css');?>
+
+<?php $this->registerCssFile('/css/fonts.css');?>
+<?php $this->registerCssFile('/css/screen.css');?>
+<?php $this->registerCssFile('/css/media.css');?>
+<?php $this->registerCssFile('/css/custom.css');?>
\ No newline at end of file