Admin_EmailController::getDataByIdAction PHP Method

    public function getDataByIdAction()
    {
        // check for lock
        if (Element\Editlock::isLocked($this->getParam("id"), "document")) {
            $this->_helper->json(["editlock" => Element\Editlock::getByElement($this->getParam("id"), "document")]);
        }
        Element\Editlock::lock($this->getParam("id"), "document");
        $email = Document\Email::getById($this->getParam("id"));
        $email = clone $email;
        $email = $this->getLatestVersion($email);
        $versions = Element\Service::getSafeVersionInfo($email->getVersions());
        $email->setVersions(array_splice($versions, 0, 1));
        $email->idPath = Element\Service::getIdPath($email);
        $email->userPermissions = $email->getUserPermissions();
        $email->setLocked($email->isLocked());
        $email->setParent(null);
        // unset useless data
        $email->setElements(null);
        $email->childs = null;
        $this->addTranslationsData($email);
        $this->minimizeProperties($email);
        //Hook for modifying return value - e.g. for changing permissions based on object data
        //data need to wrapped into a container in order to pass parameter to event listeners by reference so that they can change the values
        $returnValueContainer = new \Pimcore\Model\Tool\Admin\EventDataContainer(object2array($email));
        \Pimcore::getEventManager()->trigger("admin.document.get.preSendData", $this, ["document" => $email, "returnValueContainer" => $returnValueContainer]);
        if ($email->isAllowed("view")) {
            $this->_helper->json($returnValueContainer->getData());
        }
        $this->_helper->json(false);
    }