VariantView for TYPO3 8.7 - php

Question

There has been a solution for template variants, which allowed to set a suffix for a fluid template file used by an extbase controller. It was created by Peter Niederlag and was improved by Bastian Waidelich.
The solution is not working any longer in TYPO3 8.7 because the code has been refactored and the method expandGenericPathPattern in TemplateView does not exist anymore.
How should I implement such variant view in TYPO3 8.7?

Answer 1

$this->view->getRenderingContext()->setControllerAction('MyAction.Variant'); should do the trick (from any initializeAction method or within action method). Note that contrary to the view override class you linked to, this approach means you must have the original action template in the path.

Answer 2

I created the following classes in my extension, which implement the VariantView for TYPO3 8.7.
Classes\View\VariantView.php
<?php
namespace Vendor\Extkey\View;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Extbase\Object\ObjectManager;
use TYPO3\CMS\Fluid\View\TemplateView;
/**
* Extended Fluid Template View that supports different "variants"
*
* #license http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License, version 3 or later
*/
class VariantView extends TemplateView
{
/**
* #param string $layoutVariant
* #return void
*/
public function setLayoutVariant($layoutVariant)
{
$objectManager = GeneralUtility::makeInstance(ObjectManager::class);
$this->baseRenderingContext->setTemplatePaths($objectManager->get(TemplatePaths::class));
/** #var TemplatePaths $templatePaths */
$templatePaths = $this->baseRenderingContext->getTemplatePaths();
$templatePaths->setLayoutVariant($layoutVariant);
}
const DEFAULT_LAYOUT_VARIANT = '.default';
}
Classes\View\TemplatePaths.php
<?php
namespace Vendor\Extkey\View;
class TemplatePaths extends \TYPO3\CMS\Fluid\View\TemplatePaths
{
/**
* Layout variant to use for this view.
*
* #var string
*/
protected $layoutVariant = VariantView::DEFAULT_LAYOUT_VARIANT;
/**
* #param string $layoutVariant
* #return void
*/
public function setLayoutVariant($layoutVariant)
{
$this->layoutVariant = $layoutVariant;
}
/**
* Wrapper for parent class method which adds layout variant in action parameter
*
* #param string $controller
* #param string $action
* #param string $format
* #return string|NULL
* #api
*/
public function resolveTemplateFileForControllerAndActionAndFormat($controller, $action, $format = self::DEFAULT_FORMAT)
{
$action = $action . $this->layoutVariant;
return parent::resolveTemplateFileForControllerAndActionAndFormat($controller, $action, $format = self::DEFAULT_FORMAT);
}
}
In your controller add the following lines:
protected function setViewConfiguration(\TYPO3\CMS\Extbase\Mvc\View\ViewInterface $view) {
parent::setViewConfiguration($view);
$view->setLayoutVariant($this->settings['layoutVariant']);
}