ValidateSetEventsWatched.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 ValidateSetEventsWatched extends ActionFilter\Base
{
    public function onBeforeAction(Event $event): ?EventResult
    {
        $request = $this->getAction()->getController()->getRequest();
 
        $eventIds = $request->get('eventIds');
        if (!$eventIds)
        {
            $this->addError(new Error(
                message: 'eventIds is required',
                code: 'event_ids_required',
                customData: ['field_name' => 'eventIds'],
            ));
        }
 
        $uniqueIntegerEventIds = array_unique(array_filter(array_map('intval', $eventIds)));
        if (count($eventIds) !== count($uniqueIntegerEventIds))
        {
            $this->addError(new Error(
                message: 'eventIds invalid',
                code: 'event_ids_invalid',
                customData: ['field_name' => 'eventIds']
            ));
        }
 
        if ($this->getErrors())
        {
            return new EventResult(type: EventResult::ERROR, handler: $this);
        }
 
        return null;
    }
}