TYPO3 - TCA Input Field Rendering Example - Select Tree

gistfile1.txt

'selected_categories' => array(
    'label' => 'LLL:EXT:frontend/Resources/Private/Language/locallang_ttc.xlf:selected_categories',
    'config' => array(
        'type' => 'select',
        'renderType' => 'selectTree',
        'foreign_table' => 'sys_category',
        'foreign_table_where' => 'AND sys_category.sys_language_uid IN (0,-1) ORDER BY sys_category.title ASC',
        'size' => 10,
        'autoSizeMax' => 50,
        'maxitems' => 9999,
        'treeConfig' => array(
            'parentField' => 'parent',
            'appearance' => array(
                'expandAll' => true,
                'showHeader' => true,
            ),
        ),
    )
),
'category_field' => array(
    'label' => 'LLL:EXT:frontend/Resources/Private/Language/locallang_ttc.xlf:category_field',
    'config' => array(
        'type' => 'select',
        'renderType' => 'selectSingle',
        'size' => 1,
        'minitems' => 0,
        'maxitems' => 1,
        'itemsProcFunc' => \TYPO3\CMS\Core\Category\CategoryRegistry::class . '->getCategoryFieldsForTable',
    )
),