firefly-iii/firefly-iii

class ClauseType
{
    public const TRANSACTION = 'transaction';
    public const WHERE       = 'where';
    public const UPDATE      = 'update';
}

use FireflyIII\Enums\ClauseType;
use FireflyIII\Rules\IsValidBulkClause;
use Illuminate\Foundation\Http\FormRequest;

class TransactionRequest extends FormRequest
{
    //
    public function rules(): array
    {
        return [
            'query' => ['required', 'min:1', 'max:255', 'json', new IsValidBulkClause(ClauseType::TRANSACTION)],
        ];
    }
    //
}