TYPO3 Core

Structure¶

Pages

- Home (uid=1)
  `-- Lessons (uid=24) | overlay:Formations (uid=44)
      `--- Planning (uid=13) | overlay:Planification (uid=62)
  `-- Ice climbing (uid=44)

Categories

- Lesson (uid = 3)       // Default German
  - Formation            // French

- Ice Climbing (uid = 78)// Default German

My category is assigned to "page A".

Code (not working)¶

$pageId = 13; // "Planning" but in the french view
$pageRepository = $this->getTypoScriptFrontendController()->sys_page;

$rootline = $pageRepository->getRootLine($pageId);
foreach ($rootline as $rootlinePage) {
    if ($rootlinePage['categories']) {
        $categoryId = explode(',', $rootlinePage['categories'])[0];
        $category = $this->categoryRepository->findByUid($categoryId);

        // return the category Ice Climbing (78)
        var_dump($category);
    }
}

Code (working but why?)¶

$pageId = 13; // "Planning" but in the french view
// Mind the difference to instantiate $pageRepository?
$pageRepository = GeneralUtility::makeInstance(\TYPO3\CMS\Frontend\Page\PageRepository::class);

$rootline = $pageRepository->getRootLine($pageId);
foreach ($rootline as $rootlinePage) {
    if ($rootlinePage['categories']) {
        $categoryId = explode(',', $rootlinePage['categories'])[0];
        $category = $this->categoryRepository->findByUid($categoryId);

        // return the category Lesson (uid=3)
        var_dump($category);
    }
}