Prado\Web\UI\ActiveControls\TActiveFileUpload::onInit PHP Method

    public function onInit($sender)
    {
        parent::onInit($sender);
        if (!Prado::getApplication()->getCache()) {
            if (!Prado::getApplication()->getSecurityManager()) {
                throw new Exception('TActiveFileUpload needs either an application level cache or a security manager to work securely');
            }
        }
        if (!is_writable(Prado::getPathOfNamespace($this->getTempPath()))) {
            throw new TInvalidDataValueException("activefileupload_temppath_invalid", $this->getTempPath());
        }
    }