[BUGFIX] Model redirects in Extbase actions as proper responses

Classes/Controller/BackEnd/RegistrationController.php

@@ -4,6 +4,7 @@
 
 namespace OliverKlee\Seminars\Controller\BackEnd;
 
+use OliverKlee\Seminars\Controller\RedirectTrait;
 use OliverKlee\Seminars\Csv\CsvDownloader;
 use OliverKlee\Seminars\Csv\CsvResponse;
 use OliverKlee\Seminars\Domain\Model\Event\Event;
@@ -23,6 +24,7 @@ class RegistrationController extends ActionController
     use EventStatisticsTrait;
     use PageUidTrait;
     use PermissionsTrait;
+    use RedirectTrait;
 
     /**
      * @var non-empty-string
@@ -115,14 +117,14 @@ private function exportCsvAction(): ResponseInterface
      * @param positive-int $registrationUid
      * @param positive-int $eventUid
      */
-    public function deleteAction(int $registrationUid, int $eventUid): void
+    public function deleteAction(int $registrationUid, int $eventUid): ResponseInterface
     {
         $this->registrationRepository->deleteViaDataHandler($registrationUid);
 
         $message = $this->languageService
             ->sL('LLL:EXT:seminars/Resources/Private/Language/locallang.xml:backEndModule.message.registrationDeleted');
         $this->addFlashMessage($message);
 
-        $this->redirect('showForEvent', 'BackEnd\\Registration', null, ['eventUid' => $eventUid]);
+        return $this->buildRedirectToAction('showForEvent', 'BackEnd\\Registration', null, ['eventUid' => $eventUid]);
     }
 }

Classes/Controller/RedirectTrait.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OliverKlee\Seminars\Controller;
+
+use Psr\Http\Message\ResponseInterface;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Extbase\Mvc\Controller\ActionController;
+
+/**
+ * This convenience trait provides a method to redirect to a different action that is also compatible
+ * with TYPO3 12LTS and 13LTS.
+ *
+ * @phpstan-require-extends ActionController
+ *
+ * @internal
+ */
+trait RedirectTrait
+{
+    /**
+     * @param array<string, string|int> $arguments
+     */
+    private function buildRedirectToAction(
+        string $actionName,
+        ?string $controllerName = null,
+        ?string $extensionName = null,
+        array $arguments = [],
+        ?int $pageUid = null
+    ): ResponseInterface {
+        if ($controllerName === null) {
+            $controllerName = $this->request->getControllerName();
+        }
+        $this->uriBuilder->reset()->setCreateAbsoluteUri(true);
+        if (\is_int($pageUid)) {
+            $this->uriBuilder->setTargetPageUid($pageUid);
+        }
+        if (GeneralUtility::getIndpEnv('TYPO3_SSL')) {
+            $this->uriBuilder->setAbsoluteUriScheme('https');
+        }
+        $uri = $this->uriBuilder->uriFor($actionName, $arguments, $controllerName, $extensionName);
+
+        return $this->responseFactory->createResponse(307)->withHeader('Location', $uri);
+    }
+}

Tests/Unit/Controller/BackEnd/RegistrationControllerTest.php

@@ -20,6 +20,7 @@
 use TYPO3\CMS\Core\Localization\LanguageService;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Extbase\Mvc\Controller\ActionController;
+use TYPO3\CMS\Extbase\Mvc\Web\Routing\UriBuilder;
 use TYPO3\CMS\Fluid\View\TemplateView;
 use TYPO3\TestingFramework\Core\AccessibleObjectInterface;
 use TYPO3\TestingFramework\Core\Unit\UnitTestCase;
@@ -92,6 +93,7 @@ protected function setUp(): void
         );
         $this->subject = $subject;
 
+        $this->subject->_set('uriBuilder', $this->createStub(UriBuilder::class));
         $responseStub = $this->createStub(HtmlResponse::class);
         $this->subject->method('htmlResponse')->willReturn($responseStub);
 
@@ -583,6 +585,9 @@ public function deleteActionRedirectsToShowRegistrationsForEventAction(): void
 
         $this->mockRedirect('showForEvent', 'BackEnd\\Registration', null, ['eventUid' => $eventUid]);
 
-        $this->subject->deleteAction(15, $eventUid);
+        $result = $this->subject->deleteAction(15, $eventUid);
+
+        self::assertSame(307, $result->getStatusCode());
+        self::assertSame('Location', $result->getHeaders()['Location'][0]);
     }
 }