From: Marcel Werk <burntime@woltlab.com>
Date: Tue, 14 Jun 2016 09:29:56 +0000 (+0200)
Subject: Added hreflang-tags to other (language) versions of a page
X-Git-Tag: 3.0.0_Beta_1~1456
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=28468c30e5d028799044f8c5631c90709362cb03;p=GitHub%2FWoltLab%2FWCF.git

Added hreflang-tags to other (language) versions of a page
---

diff --git a/com.woltlab.wcf/templates/cms.tpl b/com.woltlab.wcf/templates/cms.tpl
index 6d9651ea4e..55111b784a 100644
--- a/com.woltlab.wcf/templates/cms.tpl
+++ b/com.woltlab.wcf/templates/cms.tpl
@@ -1,5 +1,13 @@
 {capture assign='headContent'}
 	<link rel="canonical" href="{$canonicalURL}">
+	
+	{if $page->isMultilingual}
+		{foreach from=$page->getPageLanguages() item='pageLanguage'}
+			{if $pageLanguage->getLanguage()}
+				<link rel="alternate" hreflang="{$pageLanguage->getLanguage()->languageCode}" href="{$pageLanguage->getLink()}">
+			{/if}
+		{/foreach}
+	{/if}
 {/capture}
 
 {include file='header'}
diff --git a/wcfsetup/install/files/lib/data/page/Page.class.php b/wcfsetup/install/files/lib/data/page/Page.class.php
index 8ed5c581e4..6f172b556d 100644
--- a/wcfsetup/install/files/lib/data/page/Page.class.php
+++ b/wcfsetup/install/files/lib/data/page/Page.class.php
@@ -297,6 +297,27 @@ class Page extends DatabaseObject implements ILinkableObject, ITitledObject {
 		return '';
 	}
 	
+	/**
+	 * Returns the languages of this page.
+	 * 
+	 * @return PageLanguage[]
+	 */
+	public function getPageLanguages() {
+		$pageLanguages = [];
+		if ($this->isMultilingual) {
+			$sql = "SELECT  languageID
+				FROM    wcf" . WCF_N . "_page_content
+				WHERE   pageID = ?";
+			$statement = WCF::getDB()->prepareStatement($sql);
+			$statement->execute([$this->pageID]);
+			while ($languageID = $statement->fetchColumn()) {
+				$pageLanguages[] = new PageLanguage($this->pageID, $languageID);
+			}
+		}
+		
+		return $pageLanguages;
+	}
+	
 	/**
 	 * Returns the page with the given identifier.
 	 * 
diff --git a/wcfsetup/install/files/lib/data/page/PageLanguage.class.php b/wcfsetup/install/files/lib/data/page/PageLanguage.class.php
new file mode 100644
index 0000000000..1c85cdf4b7
--- /dev/null
+++ b/wcfsetup/install/files/lib/data/page/PageLanguage.class.php
@@ -0,0 +1,59 @@
+<?php
+namespace wcf\data\page;
+use wcf\data\language\Language;
+use wcf\system\language\LanguageFactory;
+use wcf\system\request\LinkHandler;
+
+/**
+ * Represents a page language.
+ *
+ * @author	Marcel Werk
+ * @copyright	2001-2016 WoltLab GmbH
+ * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @package	com.woltlab.wcf
+ * @subpackage	data.page
+ * @category	Community Framework
+ * @since	2.2
+ */
+class PageLanguage {
+	/**
+	 * language id
+	 * @var integer
+	 */
+	protected $languageID;
+	
+	/**
+	 * page id
+	 * @var integer
+	 */
+	protected $pageID;
+	
+	/**
+	 * Creates a new PageLanguage object.
+	 *
+	 * @param       integer         $pageID
+	 * @param       integer         $languageID
+	 */
+	public function __construct($pageID, $languageID) {
+		$this->pageID = $pageID;
+		$this->languageID = $languageID;
+	}
+	
+	/**
+	 * Returns the link to this version of the page.
+	 *
+	 * @return	string
+	 */
+	public function getLink() {
+		return LinkHandler::getInstance()->getCmsLink($this->pageID, $this->languageID);
+	}
+	
+	/**
+	 * Returns the language of this version of the page.
+	 *
+	 * @return	Language
+	 */
+	public function getLanguage() {
+		return LanguageFactory::getInstance()->getLanguage($this->languageID);
+	}
+}