From 5209cdccdbe926d31bafec0e284a0b19f3962625 Mon Sep 17 00:00:00 2001
From: Robin Appelman <robin@icewind.nl>
Date: Tue, 4 Jun 2019 14:11:24 +0200
Subject: [PATCH] fix loading multiple version backends from one app

Signed-off-by: Robin Appelman <robin@icewind.nl>
---
 .../lib/AppInfo/Application.php               | 31 +++++++++++++------
 1 file changed, 21 insertions(+), 10 deletions(-)

diff --git a/apps/files_versions/lib/AppInfo/Application.php b/apps/files_versions/lib/AppInfo/Application.php
index 45dc6da6e2c..6a8e50dba93 100644
--- a/apps/files_versions/lib/AppInfo/Application.php
+++ b/apps/files_versions/lib/AppInfo/Application.php
@@ -65,25 +65,36 @@ class Application extends App {
 
 	public function registerVersionBackends() {
 		$server = $this->getContainer()->getServer();
-		$logger = $server->getLogger();
 		$appManager = $server->getAppManager();
-		/** @var IVersionManager $versionManager */
-		$versionManager = $this->getContainer()->getServer()->query(IVersionManager::class);
 		foreach($appManager->getInstalledApps() as $app) {
 			$appInfo = $appManager->getAppInfo($app);
 			if (isset($appInfo['versions'])) {
 				$backends = $appInfo['versions'];
 				foreach($backends as $backend) {
-					$class = $backend['@value'];
-					$for = $backend['@attributes']['for'];
-					try {
-						$backendObject = $server->query($class);
-						$versionManager->registerBackend($for, $backendObject);
-					} catch (\Exception $e) {
-						$logger->logException($e);
+					if (isset($backend['@value'])) {
+						$this->loadBackend($backend);
+					} else {
+						foreach ($backend as $singleBackend) {
+							$this->loadBackend($singleBackend);
+						}
 					}
 				}
 			}
 		}
 	}
+
+	private function loadBackend(array $backend) {
+		$server = $this->getContainer()->getServer();
+		$logger = $server->getLogger();
+		/** @var IVersionManager $versionManager */
+		$versionManager = $this->getContainer()->getServer()->query(IVersionManager::class);
+		$class = $backend['@value'];
+		$for = $backend['@attributes']['for'];
+		try {
+			$backendObject = $server->query($class);
+			$versionManager->registerBackend($for, $backendObject);
+		} catch (\Exception $e) {
+			$logger->logException($e);
+		}
+	}
 }
-- 
2.39.5