destselectorfield.php

См. документацию.

<?php
namespace Bitrix\Sender\Connector\Filter;

class DestSelectorField extends AbstractField
{
    public function applyFilter(array &$filter = array())
    {
        $filterKey = $this->getFilterKey();
        $filter[$filterKey] = $this->getValue();
        $data = $this->getData();
        $data['id'] = $filterKey;
        \Bitrix\Crm\UI\Filter\EntityHandler::internalize([$data], $filter);
    }

    public function fetchFieldValue($filterFields)
    {
        $id = $this->getId();
        $value = $filterFields[$id] ?? false;
        if (!array_key_exists($id . '_label', $filterFields))
        {
            return $value ? [$id => $value] : [];
        }
        $label = $filterFields[$id . '_label'];
 
        if (!$value || !$label)
            return [];
 
        return [
            '_value' => $value,
            '_label' => $label
        ];
    }
 
    private function getData()
    {
        return $this->data;
    }
}