TYPO3 - TCA: required property for type-> 'select'

Question

in an extension, I have an issue with the required select.

I tried to use 'eval' => 'required', in the TCA configuration to make the field of selecting a table required, but in the BE, it's still always not required, and I can save the form even without choosing a table, so maybe it works only with the type 'input'.

how can I fixe that?

This is the TCA:

 'name' => array(
        'label' => 'LLL:EXT:ext_key/Resources/Private/Language/locallang_db.xlf:tx_ext_domain_model_name.firstname',
        'config' => array(
            'type' => 'select',
            'renderType' => 'selectSingle',
            'eval' => 'required',
            'items' => array(

    
'items' => array(
                array('LLL:EXT:ext_key/Resources/Private/Language/locallang_db.xlf:tx_ext_domain_model_name.firstname'.choose', 0),
            ),
            'size' => 1,
            'maxitems' => 1,
            'itemsProcFunc' => 'Vendor\Extension\Utility\ProcFuncUtility->getName', );

Answer 1

select/selectSingle 没有eval属性（请参阅https://docs.typo3.org/m/typo3/reference-tca/10.4/en-us/ColumnsConfig/Type/selectSingle.html#properties ）。