Pimcore\Model\Object\ClassDefinition\Data\Relations\AbstractRelations::allowObjectRelation PHP Метод

    protected function allowObjectRelation($object)
    {
        $allowedClasses = $this->getClasses();
        $allowed = true;
        if (!$this->getObjectsAllowed()) {
            $allowed = false;
        } elseif ($this->getObjectsAllowed() and is_array($allowedClasses) and count($allowedClasses) > 0) {
            //check for allowed classes
            if ($object instanceof Object\Concrete) {
                $classname = $object->getClassName();
                foreach ($allowedClasses as $c) {
                    $allowedClassnames[] = $c['classes'];
                }
                if (!in_array($classname, $allowedClassnames)) {
                    $allowed = false;
                }
            } else {
                $allowed = false;
            }
        } else {
            //don't check if no allowed classes set
        }
        if ($object instanceof Object\AbstractObject) {
            Logger::debug("checked object relation to target object [" . $object->getId() . "] in field [" . $this->getName() . "], allowed:" . $allowed);
        } else {
            Logger::debug("checked object relation to target in field [" . $this->getName() . "], not allowed, target ist not an object");
            Logger::debug($object);
        }
        return $allowed;
    }