[FEATURE][PoC] Introduce way to skip fluid templates

Classes/XClass/TemplateView.php

@@ -0,0 +1,69 @@
+<?php
+
+/*
+ * This file is part of the "headless" Extension for TYPO3 CMS.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.md file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace FriendsOfTYPO3\Headless\XClass;
+
+use TYPO3\CMS\Core\Http\ApplicationType;
+use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
+use TYPO3Fluid\Fluid\View\Exception\InvalidTemplateResourceException;
+
+use function extract;
+use function ob_end_clean;
+use function ob_get_clean;
+use function ob_start;
+
+class TemplateView extends \TYPO3\CMS\Fluid\View\TemplateView
+{
+    public function render($actionName = null)
+    {
+        if (!ApplicationType::fromRequest($GLOBALS['TYPO3_REQUEST'])->isFrontend()) {
+            return parent::render($actionName);
+        }
+
+        $renderingContext = $this->getCurrentRenderingContext();
+
+        if ((int)($renderingContext->getVariableProvider()->get('settings')['phpTemplate'] ?? 0) !== 1) {
+            return parent::render($actionName);
+        }
+
+        $templatePaths = $renderingContext->getTemplatePaths();
+        if ($actionName) {
+            $actionName = ucfirst($actionName);
+            $renderingContext->setControllerAction($actionName);
+        }
+
+        $templateFile = $templatePaths->resolveTemplateFileForControllerAndActionAndFormat($renderingContext->getControllerName(), $renderingContext->getControllerAction(), 'php');
+
+        if ($templateFile === null) {
+            throw new InvalidTemplateResourceException('Template is not found');
+        }
+
+        return $this->loadTemplate($templateFile, $renderingContext);
+    }
+
+    private function loadTemplate(string $templateFile, RenderingContextInterface $renderingContext): string
+    {
+        $__jsonContent = '';
+
+        try {
+            extract($renderingContext->getVariableProvider()->getAll());
+
+            ob_start();
+            include $templateFile;
+            $__jsonContent = ob_get_clean();
+        } catch (\Throwable $e) {
+            ob_end_clean();
+            throw $e;
+        }
+
+        return $__jsonContent;
+    }
+}

Configuration/Services.php

@@ -12,6 +12,8 @@
 use FriendsOfTYPO3\Headless\Utility\HeadlessFrontendUrlInterface;
 use FriendsOfTYPO3\Headless\Utility\UrlUtility;
 use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
+use TYPO3\CMS\Core\Configuration\Features;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Form\Controller\FormFrontendController;
 use TYPO3\CMS\FrontendLogin\Controller\LoginController;
 
@@ -44,4 +46,10 @@
 
     $services->set(HeadlessFrontendUrlInterface::class, UrlUtility::class)->autowire(false);
     $services->set(XmlSitemapRenderer::class)->public()->share(false);
+
+    $features = GeneralUtility::makeInstance(Features::class);
+
+    if ($features->isFeatureEnabled('headless.overrideFluidTemplates')) {
+        $services->alias(\TYPO3\CMS\Fluid\View\TemplateView::class, \FriendsOfTYPO3\Headless\XClass\TemplateView::class);
+    }
 };

Tests/Unit/XClass/Fixtures/Templates/Default/Default.php

@@ -0,0 +1,12 @@
+<?php
+
+/*
+ * This file is part of the "headless" Extension for TYPO3 CMS.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.md file that was distributed with this source code.
+ */
+
+echo json_encode([
+    'testKey' => $testValue,
+]);

Tests/Unit/XClass/TemplateViewTest.php

@@ -0,0 +1,72 @@
+<?php
+
+/*
+ * This file is part of the "headless" Extension for TYPO3 CMS.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.md file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace FriendsOfTYPO3\Headless\Tests\Unit\XClass;
+
+use FriendsOfTYPO3\Headless\XClass\TemplateView;
+use TYPO3\CMS\Core\Http\ServerRequest;
+use TYPO3\CMS\Fluid\Core\Rendering\RenderingContext;
+use TYPO3\CMS\Fluid\Core\ViewHelper\ViewHelperResolver;
+use TYPO3\TestingFramework\Core\Unit\UnitTestCase;
+use TYPO3Fluid\Fluid\Core\Cache\FluidCacheInterface;
+use TYPO3Fluid\Fluid\Core\Variables\StandardVariableProvider;
+use TYPO3Fluid\Fluid\View\Exception\InvalidTemplateResourceException;
+use TYPO3Fluid\Fluid\View\TemplatePaths;
+
+use function json_encode;
+
+class TemplateViewTest extends UnitTestCase
+{
+    public function testTemplateNotFoundOrPHPTemplatesDisabledRender(): void
+    {
+        $this->expectException(InvalidTemplateResourceException::class);
+
+        $GLOBALS['TYPO3_REQUEST'] = (new ServerRequest())->withAttribute('applicationType', 1); // fe request
+
+        $context = new RenderingContext($this->createMock(ViewHelperResolver::class), $this->createMock(FluidCacheInterface::class), [], []);
+
+        $variableProvider = new StandardVariableProvider();
+        $variableProvider->add('settings', ['phpTemplate' => 1]);
+
+        $context->setVariableProvider($variableProvider);
+        $view = new TemplateView($context);
+        $view->render();
+
+        $variableProvider = new StandardVariableProvider();
+        $variableProvider->add('settings', ['phpTemplate' => 0]);
+
+        $context->setVariableProvider($variableProvider);
+        $view = new TemplateView($context);
+        $view->render();
+    }
+
+    public function testTemplateRender(): void
+    {
+        $GLOBALS['TYPO3_REQUEST'] = (new ServerRequest())->withAttribute('applicationType', 1); // fe request
+
+        $context = new RenderingContext($this->createMock(ViewHelperResolver::class), $this->createMock(FluidCacheInterface::class), [], []);
+
+        $variableProvider = new StandardVariableProvider();
+        $variableProvider->add('settings', ['phpTemplate' => 1]);
+        $variableProvider->add('testValue', 'TestingJsonValue');
+
+        $context->setVariableProvider($variableProvider);
+
+        $templatePaths = $this->createMock(TemplatePaths::class);
+        $templatePaths->method('resolveTemplateFileForControllerAndActionAndFormat')->willReturn(__DIR__ . '/Fixtures/Templates/Default/Default.php');
+
+        $context->setTemplatePaths($templatePaths);
+
+        $view = new TemplateView($context);
+
+        self::assertSame(json_encode(['testKey' => 'TestingJsonValue']), $view->render());
+    }
+}