Feheler beim abspeichern von Datum in DB

// No direct access
defined('_JEXEC') or die;

jimport('joomla.application.component.controllerform');

/**
 * Meldung controller class.
 *
 * @since  1.6
 */
class AttlistControllerMeldung extends JControllerForm
{
    /**
     * Constructor
     *
     * @throws Exception
     */
    public function __construct()
    {
        $this->view_list = 'meldungen';
        parent::__construct();
    }
}

// No direct access
defined('_JEXEC') or die;

/**
 * Meldung controller class.
 *
 * @since  1.6
 */
class AttlistControllerMeldungForm extends JControllerForm
{
    /**
     * Method to save a user's profile data.
     *
     * @return void
     *
     * @throws Exception
     * @since  1.6
     */
    public function save($key = NULL, $urlVar = NULL)
    {
        // Check for request forgeries.
        JSession::checkToken() or jexit(JText::_('JINVALID_TOKEN'));

        // Initialise variables.
        $app   = JFactory::getApplication();
        $model = $this->getModel('MeldungForm', 'AttlistModel');

        // Get the user data.
        $data = JFactory::getApplication()->input->get('jform', array(), 'array');

        // Validate the posted data.
        $form = $model->getForm();

        if (!$form)
        {
            throw new Exception($model->getError(), 500);
        }

        // Validate the posted data.
        $data = $model->validate($form, $data);

        // Check for errors.
        if ($data === false)
        {
            // Get the validation messages.
            $errors = $model->getErrors();

            // Push up to three validation messages out to the user.
            for ($i = 0, $n = count($errors); $i < $n && $i < 3; $i++)
            {
                if ($errors[$i] instanceof Exception)
                {
                    $app->enqueueMessage($errors[$i]->getMessage(), 'warning');
                }
                else
                {
                    $app->enqueueMessage($errors[$i], 'warning');
                }
            }

            $input = $app->input;
            $jform = $input->get('jform', array(), 'ARRAY');

            // Save the data in the session.
            $app->setUserState('com_attlist.edit.meldung.data', $jform);

            // Redirect back to the edit screen.
            $id = (int) $app->getUserState('com_attlist.edit.meldung.id');
            $this->setRedirect(JRoute::_('index.php?option=com_attlist&view=meldungform&layout=edit&id=' . $id, false));

            $this->redirect();
        }

        // Attempt to save the data.
        $return = $model->save($data);

        // Check for errors.
        if ($return === false)
        {
            // Save the data in the session.
            $app->setUserState('com_attlist.edit.meldung.data', $data);

            // Redirect back to the edit screen.
            $id = (int) $app->getUserState('com_attlist.edit.meldung.id');
            $this->setMessage(JText::sprintf('Save failed', $model->getError()), 'warning');
            $this->setRedirect(JRoute::_('index.php?option=com_attlist&view=meldungform&layout=edit&id=' . $id, false));
        }

        // Check in the profile.
        if ($return)
        {
            $model->checkin($return);
        }

        // Clear the profile id from the session.
        $app->setUserState('com_attlist.edit.meldung.id', null);

        // Redirect to the list screen.
        //$this->setMessage(JText::_('COM_ATTLIST_ITEM_SAVED_SUCCESSFULLY'));
        $this->setMessage(print_r($data));
        $menu = JFactory::getApplication()->getMenu();
        $item = $menu->getActive();
        $url  = (empty($item->link) ? 'index.php?option=com_attlist&view=meldungen' : $item->link);
        $this->setRedirect(JRoute::_($url, false));

        // Flush the data from the session.
        $app->setUserState('com_attlist.edit.meldung.data', null);
    }