Examples

Simple language field

EXT:styleguide/Configuration/TCA/tx_styleguide_elements_basic.php

[
    'columns' => [
        'sys_language_uid' => [
            'label' => 'LLL:EXT:core/Resources/Private/Language/locallang_general.xlf:LGL.language',
            'config' => [
                'type' => 'language',
            ],
        ],
    ],
]