ot_typo3/ot_templating/Classes/ViewHelpers/Template/GetPreferenceViewHelper.php

<?php

namespace Opentalent\OtTemplating\ViewHelpers\Template;


use Closure;
use Opentalent\OtTemplating\Page\OtPageRepository;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;

/**
 * Returns the value of the requested preference
 *
 *     {namespace ot=Opentalent\OtTemplating\ViewHelpers}
 *
 *     {ot:template.preference('themeColor')}
 *
 * @package Opentalent\OtTemplating\ViewHelpers\Template
 */
class GetPreferenceViewHelper extends AbstractViewHelper
{
    /**
     * -- This method is expected by Fluid --
     * Declares the viewhelper's parameters
     */
    public function initializeArguments()
    {
        $this->registerArgument(
            'key',
            'string',
            'The name of the requested preference',
            true
        );
    }

    /**
     * -- This method is expected by Fluid --
     * Renders the content as html
     *
     * @param array $arguments
     * @param Closure $renderChildrenClosure
     * @param RenderingContextInterface $renderingContext
     * @return array
     */
    public static function renderStatic(
        array $arguments,
        Closure $renderChildrenClosure,
        RenderingContextInterface $renderingContext
    ) {
        $pageRepository = GeneralUtility::makeInstance(OtPageRepository::class);
        $preferences = $pageRepository->getTemplatePreferences();
        $key = $arguments['key'];
        return $preferences[$key];
    }

}