How validate query params in nestjs

Yo, i have store application with nestjs, i need validate mongo id, which is pass by query, the problem is that i also pass and search query. I write pipe which validate all values, and exclude this search query

@Injectable()
export class ValidationObjectId implements PipeTransform {
    transform(value: UniqueId, metadata: ArgumentMetadata) {
        if (
            !Types.ObjectId.isValid(value) &&
            metadata.data !== "searchString"
        ) {
            throw new BadRequestException("Неверный параметр запроса");
        }

        return value;
    }
}

But this code not reusable for other case. I want get some examples, how i can do this