Pimcore\Model\Element\Service::isValidKey PHP Méthode

    public static function isValidKey($key, $type)
    {
        return self::getValidKey($key, $type) === $key;
    }

 public function correctPath()
 {
     // set path
     if ($this->getId() != 1) {
         // not for the root node
         if (!Element\Service::isValidKey($this->getKey(), "object")) {
             throw new \Exception("invalid key for object with id [ " . $this->getId() . " ] key is: [" . $this->getKey() . "]");
         }
         if ($this->getParentId() == $this->getId()) {
             throw new \Exception("ParentID and ID is identical, an element can't be the parent of itself.");
         }
         $parent = AbstractObject::getById($this->getParentId());
         if ($parent) {
             // use the parent's path from the database here (getCurrentFullPath), to ensure the path really exists and does not rely on the path
             // that is currently in the parent object (in memory), because this might have changed but wasn't not saved
             $this->setPath(str_replace("//", "/", $parent->getCurrentFullPath() . "/"));
         } else {
             // parent document doesn't exist anymore, set the parent to to root
             $this->setParentId(1);
             $this->setPath("/");
         }
         if (strlen($this->getKey()) < 1) {
             throw new \Exception("Document requires key, generated key automatically");
         }
     } elseif ($this->getId() == 1) {
         // some data in root node should always be the same
         $this->setParentId(0);
         $this->setPath("/");
         $this->setKey("");
         $this->setType("folder");
     }
     if (Service::pathExists($this->getRealFullPath())) {
         $duplicate = AbstractObject::getByPath($this->getRealFullPath());
         if ($duplicate instanceof self and $duplicate->getId() != $this->getId()) {
             throw new \Exception("Duplicate full path [ " . $this->getRealFullPath() . " ] - cannot save object");
         }
     }
     if (strlen($this->getRealFullPath()) > 765) {
         throw new \Exception("Full path is limited to 765 characters, reduce the length of your parent's path");
     }
 }