sfp_api_laravel_ginastica_cerebro/app/Http/Requests/FinancialPlanAccountRequest.php

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

class FinancialPlanAccountRequest extends FormRequest
{
    public function rules(): array
    {
        $isCreate = $this->isMethod('POST');

        return [
            'code'        => [$isCreate ? 'required' : 'sometimes', 'string', 'max:50'],
            'description' => [$isCreate ? 'required' : 'sometimes', 'string', 'max:255'],
            'chart_type'  => [$isCreate ? 'required' : 'sometimes', 'string', 'max:50'],
            'order'       => ['nullable', 'string', 'max:50'],
            'unit_id'     => ['nullable', 'integer', 'exists:units,id'],
        ];
    }
}