Pimcore\Model\Asset::correctPath PHP Method

    public function correctPath()
    {
        // set path
        if ($this->getId() != 1) {
            // not for the root node
            if (!Element\Service::isValidKey($this->getKey(), "asset")) {
                throw new \Exception("invalid filename '" . $this->getKey() . "' for asset with id [ " . $this->getId() . " ]");
            }
            if ($this->getParentId() == $this->getId()) {
                throw new \Exception("ParentID and ID is identical, an element can't be the parent of itself.");
            }
            if ($this->getFilename() === '..' || $this->getFilename() === '.') {
                throw new \Exception('Cannot create asset called ".." or "."');
            }
            $parent = Asset::getById($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);
                $this->setPath("/");
            }
        } elseif ($this->getId() == 1) {
            // some data in root node should always be the same
            $this->setParentId(0);
            $this->setPath("/");
            $this->setFilename("");
            $this->setType("folder");
        }
        // do not allow PHP and .htaccess files
        if (preg_match("@\\.ph(p[345]?|t|tml|ps)\$@i", $this->getFilename()) || $this->getFilename() == ".htaccess") {
            $this->setFilename($this->getFilename() . ".txt");
        }
        if (Asset\Service::pathExists($this->getRealFullPath())) {
            $duplicate = Asset::getByPath($this->getRealFullPath());
            if ($duplicate instanceof Asset and $duplicate->getId() != $this->getId()) {
                throw new \Exception("Duplicate full path [ " . $this->getRealFullPath() . " ] - cannot save asset");
            }
        }
        if (strlen($this->getRealFullPath()) > 765) {
            throw new \Exception("Full path is limited to 765 characters, reduce the length of your parent's path");
        }
    }