function ListStringItem::validateAllowedValue

Overrides ListItemBase::validateAllowedValue

File

core/modules/options/src/Plugin/Field/FieldType/ListStringItem.php, line 68

Class

ListStringItem

Plugin implementation of the 'list_string' field type.

Namespace

Code

protected static function validateAllowedValue($option) {
    if (mb_strlen($option) > 255) {
        return new TranslatableMarkup('Allowed values list: each key must be a string at most 255 characters long.');
    }
}