Merge pull request #37 from tsanchev/master

multilingual sitemap

README.md

@@ -60,7 +60,18 @@ to the `require` section of your application's `composer.json` file.
 						        'loc' => Url::to($model->url, true),
 						        'lastmod' => strtotime($model->lastmod),
 						        'changefreq' => SitemapBehavior::CHANGEFREQ_DAILY,
-						        'priority' => 0.8
+						        'priority' => 0.8,
+							'xhtml:link' => [
+								[
+									'hreflang' => 'en',
+									'href' => Url::to(['url_en', true),
+								],
+								[
+									'hreflang' => 'de',
+									'href' => Url::to(['url_de', true),
+								],
+								//...
+							],
 						    ];
 						}
 					],

behaviors/SitemapBehavior.php

@@ -126,6 +126,10 @@ public function generateSiteMap()
             if (isset($urlData['images'])) {
                 $result[$n]['images'] = $urlData['images'];
             }
+
+            if (isset($urlData['xhtml:link'])) {
+                $result[$n]['xhtml:link'] = $urlData['xhtml:link'];
+            }
 
             ++$n;
         }

views/default/index.php

@@ -11,7 +11,8 @@
 ?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
         xmlns:image="http://www.google.com/schemas/sitemap-image/1.1"
-        xmlns:news="http://www.google.com/schemas/sitemap-news/0.9">
+        xmlns:news="http://www.google.com/schemas/sitemap-news/0.9"
+        xmlns:xhtml="http://www.w3.org/1999/xhtml">
     <?php foreach ($urls as $url): ?>
         <url>
             <loc><?= htmlspecialchars(yii\helpers\Url::to($url['loc'], true)) ?></loc>
@@ -25,6 +26,11 @@
             <?php if (isset($url['priority'])): ?>
                 <priority><?= $url['priority'] ?></priority>
             <?php endif; ?>
+            <?php if (isset($url['xhtml:link'])): ?>
+                <?php foreach ($url['xhtml:link'] as $link): ?>
+                     <xhtml:link rel="alternate" hreflang="<?= $link['hreflang'] ?>" href="<?= $link['href'] ?>" />
+                <?php endforeach; ?>
+            <?php endif; ?>
             <?php if (isset($url['news'])): ?>
                 <news:news>
                     <news:publication>