TYPO3 Core

As a developer, i want to be able to enforce selection of exactly one item in a select field. But currently, it seems impossible to declare a TCA field of type "select" as mandatory. When leaving the field empty and saving the record.

Setting "eval" to "required" is ignored.

        'store' => array(
            'exclude' => 1,
            'label' => 'store',
            'config' => array(
                    'type' => 'select',
                    'foreign_table' => 'tx_myext_domain_model_store',
                    'size' => 1,
                    'autoSizeMax' => 30,
                    'items' => array(
                        array('', ''),
                    ),
                    'maxitems' => 1,
                    'minitems' => 1,
                    'multiple' => 0,
                    'eval' => 'required'
            ),
        ),