ValidateGetOpenEventList.php

См. документацию.

<?php
 
namespace Bitrix\Calendar\OpenEvents\Controller\Filter\OpenEvent;
 
use Bitrix\Main\Engine\ActionFilter;
use Bitrix\Main\Error;
use Bitrix\Main\Event;
use Bitrix\Main\EventResult;
 
final class ValidateGetOpenEventList extends ActionFilter\Base
{
    public function onBeforeAction(Event $event): ?EventResult
    {
        $request = $this->getAction()->getController()->getRequest();
        $categoryId = $request->get('categoryId');
        if ($categoryId && $categoryId < 0)
        {
            $this->addError(
                new Error(
                    message: 'categoryId should be positive integer',
                    customData: ['field_name' => 'categoryId'],
                )
            );
        }
 
        $onlyCurrentUser = $request['onlyCurrentUser'] ?? null;
        $this->validateBool($onlyCurrentUser, 'onlyCurrentUser');
 
        $onlyWithComments = $request['onlyWithComments'] ?? null;
        $this->validateBool($onlyWithComments, 'onlyWithComments');
 
        $fromYear = $request['fromYear'] ?? null;
        $this->validateYear($fromYear, 'fromYear');
 
        $fromMonth = $request['fromMonth'] ?? null;
        $this->validateMonth($fromMonth, 'fromMonth');
 
        $toYear = $request['toYear'] ?? null;
        $this->validateYear($toYear, 'toYear');
 
        $toMonth = $request['toMonth'] ?? null;
        $this->validateMonth($toMonth, 'toMonth');
 
        return null;
    }
 
    private function validateBool($value, string $fieldName): void
    {
        if (
            is_string($value)
            && !in_array($value, ['true', 'false'], true)
        )
        {
            $this->addFieldError(
                sprintf('%s should be true|false', $fieldName),
                $fieldName
            );
        }
    }
 
    private function validateYear($value, string $fieldName): void
    {
        if (
            is_string($value)
            && $value
            && (int)$value < 2000
        )
        {
            $this->addFieldError(sprintf('%s should be valid year', $fieldName), $fieldName);
        }
    }
 
    private function validateMonth($value, string $fieldName): void
    {
        if (
            is_string($value)
            && $value
            && ((int)$value < 1 || (int)$value > 12)
        )
        {
            $this->addFieldError(sprintf('%s should be valid month', $fieldName), $fieldName);
        }
    }
 
    private function addFieldError(string $message, string $fieldName): void
    {
        $this->addError(
            new Error(
                message: $message,
                customData: ['field_name' => $fieldName],
            )
        );
    }
}