Smile\ElasticsuiteCatalog\Model\Layer\Filter\Attribute::getFilterField PHP Метод

    protected function getFilterField()
    {
        $field = $this->getAttributeModel()->getAttributeCode();
        if ($this->getAttributeModel()->usesSource()) {
            $field = $this->mappingHelper->getOptionTextFieldName($field);
        }
        return $field;
    }