電話番号
'phone_number' => ['required', 'regex:/^\d{2,5}-?\d{1,4}-?\d{4}$/', 'between:10,13'],
チェックボックス一つ以上選択
$target_type_rules = [
'section1.is_full_time_employee' => 'required_without_all:section1.is_contract_employee,section1.is_part_timer,section1.is_part_time_job,section1.is_part_time_employee,section1.is_employment_type_other',
];
$target_type_messages = [
'section1.is_full_time_employee.required_without_all' => '職種を一つ以上選択してください'
];