BUGFIX Fixed finding a translated homepage without an explicit URLSegment (e.g. http://mysite.com/?lang=de) - see #3540

ENHANCEMENT Added Translatable::get_homepage_urlsegment_by_language()
ENHANCEMENT Added RootURLController::get_default_homepage_urlsegment()

git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@72054 467b73ca-7a2a-4603-9d3b-597d59a354a9

core/control/ModelAsController.php

@@ -38,9 +38,9 @@ class ModelAsController extends Controller implements NestedController {
 					$url = Controller::join_links(
 						Director::baseURL(),
 						$child->URLSegment,
-						$this->urlParams['Action'],
+						(isset($this->urlParams['Action'])) ? $this->urlParams['Action'] : null,
-						$this->urlParams['ID'],
+						(isset($this->urlParams['ID'])) ? $this->urlParams['ID'] : null,
-						$this->urlParams['OtherID']
+						(isset($this->urlParams['OtherID'])) ? $this->urlParams['OtherID'] : null
 					);
 					
 					$response = new HTTPResponse();

core/control/RootURLController.php

@@ -6,8 +6,19 @@
  * @subpackage control
  */
 class RootURLController extends Controller {
+	
+	/**
+	 * @var boolean $is_at_root
+	 */
 	protected static $is_at_root = false;
 	
+	/**
+	 * @var string $default_homepage_urlsegment Defines which URLSegment value on a {@link SiteTree} object
+	 * is regarded as the correct "homepage" if the requested URI doesn't contain
+	 * an explicit segment. E.g. http://mysite.com should show http://mysite.com/home.
+	 */
+	protected static $default_homepage_urlsegment = 'home';
+	
 	public function init() {
 		Director::set_site_mode('site');
 		parent::init();
@@ -20,7 +31,6 @@ class RootURLController extends Controller {
 		$this->init();
 
 		$controller = new ModelAsController();
-		
 		$request = new HTTPRequest("GET", self::get_homepage_urlsegment().'/', $request->getVars(), $request->postVars());
 		$request->match('$URLSegment//$Action', true);
 			
@@ -32,9 +42,13 @@ class RootURLController extends Controller {
 
 	/**
 	 * Return the URL segment for the current HTTP_HOST value
+	 * 
+	 * @return string
 	 */
 	static function get_homepage_urlsegment() {
-		// Temporarily restricted to MySQL database while testing db abstraction
+		$urlSegment = '';
+		
+		// @todo Temporarily restricted to MySQL database while testing db abstraction
 		if(DB::getConn() instanceof MySQLDatabase) {
 			$host = $_SERVER['HTTP_HOST'];
 			$host = str_replace('www.','',$host);
@@ -45,10 +59,12 @@ class RootURLController extends Controller {
 		}
 
 		if($homePageOBJ) {
-			return $homePageOBJ->URLSegment;
+			$urlSegment = $homePageOBJ->URLSegment;
-		} else {
+		} elseif(Translatable::is_enabled()) {
-			return 'home';
+			$urlSegment = Translatable::get_homepage_urlsegment_by_language(Translatable::current_lang());
 		}
+		
+		return ($urlSegment) ? $urlSegment : self::get_default_homepage_urlsegment();
 	}
 	
 	/**
@@ -59,6 +75,13 @@ class RootURLController extends Controller {
 		if(!self::$is_at_root) return self::get_homepage_urlsegment() == $currentPage->URLSegment;
 		else return false;
 	}
+	
+	/**
+	 * @return string
+	 */
+	static function get_default_homepage_urlsegment() {
+		return self::$default_homepage_urlsegment;
+	}
 }
 
 ?>

core/model/Translatable.php

@@ -816,6 +816,31 @@ class Translatable extends DataObjectDecorator {
 		return $returnMap;
 	}
 	
+	/**
+	 * Gets a URLSegment value for a homepage in another language.
+	 * The value is inferred by finding the homepage in default language
+	 * (as identified by RootURLController::$default_homepage_urlsegment).
+	 * Returns NULL if no translated page can be found.
+	 * 
+	 * @param string $Lang
+	 * @return string|boolean URLSegment (e.g. "home")
+	 */
+	static function get_homepage_urlsegment_by_language($lang) {
+		$origHomepageObj = Translatable::get_one_by_lang(
+			'SiteTree',
+			Translatable::default_lang(),
+			sprintf('"URLSegment" = \'%s\'', RootUrlController::get_default_homepage_urlsegment())
+		);
+		if($origHomepageObj) {
+			$translatedHomepageObj = $origHomepageObj->getTranslation(Translatable::current_lang());
+			if($translatedHomepageObj) {
+				return $translatedHomepageObj->URLSegment;
+			}
+		}
+		
+		return null;
+	}
+		
 }
 
 /**

tests/model/TranslatableTest.php

@@ -478,6 +478,40 @@ class TranslatableTest extends FunctionalTest {
 		// reset language
 		Translatable::set_reading_lang('en');
 	}
+
+	function testRootUrlDefaultsToTranslatedUrlSegment() {
+		$_originalHost = $_SERVER['HTTP_HOST'];
+		
+		$origPage = $this->objFromFixture('Page', 'homepage_en');
+		$origPage->publish('Stage', 'Live');
+		$translationDe = $origPage->createTranslation('de');
+		$translationDe->URLSegment = 'heim';
+		$translationDe->write();
+		$translationDe->publish('Stage', 'Live');
+		
+		// test with translatable enabled
+		$_SERVER['HTTP_HOST'] = '/?lang=de';
+		Translatable::set_reading_lang('de');
+		$this->assertEquals(
+			RootURLController::get_homepage_urlsegment(), 
+			'heim', 
+			'Homepage with different URLSegment in non-default language is found'
+		);
+		
+		// test with translatable disabled
+		Translatable::disable();
+		$_SERVER['HTTP_HOST'] = '/';
+		$this->assertEquals(
+			RootURLController::get_homepage_urlsegment(), 
+			'home', 
+			'Homepage is showing in default language if ?lang GET variable is left out'
+		);
+		Translatable::enable();
+		
+		// setting back to default
+		Translatable::set_reading_lang('en');
+		$_SERVER['HTTP_HOST'] = $_originalHost;
+	}
 }
 
 class TranslatableTest_DataObject extends DataObject implements TestOnly {

tests/model/TranslatableTest.yml

@@ -1,4 +1,8 @@
 Page:
+   homepage_en:
+      Title: Home
+      URLSegment: home
+      Lang: en
    testpage_en:
       Title: Home
       MenuTitle: A Testpage