Admin_ObjectController::diffVersionsAction PHP Метод

    public function diffVersionsAction()
    {
        Pimcore\Model\Object\AbstractObject::setDoNotRestoreKeyAndPath(true);
        $id1 = intval($this->getParam("from"));
        $id2 = intval($this->getParam("to"));
        $version1 = Model\Version::getById($id1);
        $object1 = $version1->loadData();
        $version2 = Model\Version::getById($id2);
        $object2 = $version2->loadData();
        Pimcore\Model\Object\AbstractObject::setDoNotRestoreKeyAndPath(false);
        if ($object1 && $object2) {
            if ($object1->isAllowed("versions") && $object2->isAllowed("versions")) {
                $this->view->object1 = $object1;
                $this->view->object2 = $object2;
            } else {
                throw new \Exception("Permission denied, version ids [" . $id1 . ", " . $id2 . "]");
            }
        } else {
            throw new \Exception("Version with ids [" . $id1 . ", " . $id2 . "] doesn't exist");
        }
    }