ldc-tregalette/app/Http/Requests/Fo/Customers/UpdateAccountRequest.php

<?php

namespace App\Http\Requests\Fo\Customers;

class UpdateAccountRequest extends CreateAccountRequest
{
    /** @var array */
    private static $skeleton = [
        'lastname',
        'firstname',
        'birth_date',
        'phone',
        'address',
        'address2',
        'postcode',
        'city',
        'country',
        'opt_in',
    ];

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return array_merge(
            \array_intersect_key(
                parent::rules(),
                \array_flip(self::$skeleton)
            )
        );
    }
}