JSON Length

Filter::field('options->languages', [FilterType::JSON_LENGTH]);

$filter = [
    'type'     => '$jsonLength',
    'target'   => 'options->languages',
    'operator' => '>=',
    'value'    => 2,
];

$sql = User::filter([$filter])->toRawSql();

select * from "users"
where json_length("users"."options", '$."languages"') >= 2