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eval

eval

Type: string (list of keywords)
Path: $GLOBALS['TCA'][$table]['columns'][$field]['config']
Scope: Proc. / Display

Configuration of field evaluation.

Keywords:

maximumRecordsChecked

If this evaluation is defined, the maximum number of records from the same table that can have this box checked will be limited. If someone tries to check the box of a record beyond the allowed maximum, the box will be unchecked automatically upon saving.

The actual limit is defined with the validation property validation.

maximumRecordsCheckedInPid

Similar to maximumRecordsChecked but with the validation scope limited to records stored in the same page.

Examples

EXT:styleguide/Configuration/TCA/tx_styleguide_elements_basic.php

[
    'columns' => [
        'checkbox_7' => [
            'exclude' => 1,
            'label' => 'checkbox_7',
            'description' => 'eval=maximumRecordsChecked, table wide',
            'config' => [
                'type' => 'check',
                'eval' => 'maximumRecordsChecked',
                'validation' => [
                    'maximumRecordsChecked' => 1,
                ],
            ],
        ],
    ],
]