KT-MyPage/app/Kintone/Models/SeasonTicketContract.php

<?php

namespace App\Kintone\Models;

class SeasonTicketContract extends KintoneModel
{
    const CONFIG_KEY = "KINTONE_APP_SEASON_TICKET_CONTRACT";

    const FIELD_CUSTOMER_NAME = "顧客名";

    protected const FIELDS = [
        ...parent::FIELDS,
        self::FIELD_CUSTOMER_NAME => FieldType::SINGLE_LINE_TEXT,
    ];

    protected const FIELD_NAMES = [
        ...parent::FIELD_NAMES,
        self::FIELD_CUSTOMER_NAME => 'customer_name',
    ];

    protected function setDataCustom(array $data): bool
    {
        return true;
    }
}