/**
  * Get all departure dates by json request (action)
  */
 public function departuresjsonAction()
 {
     $id = $this->_getParam('id');
     $date = Doctrine_Core::getTable('Model_Hm_Date')->findOneById($id);
     $availableDepartures = new Model_Hm_AvailableDates($date->hm_home_id);
     $departureDates = $availableDepartures->getDepartureDates($date->id)->execute(null, Doctrine_Core::HYDRATE_ARRAY);
     $this->view->json = Zend_Json::encode($departureDates);
     $this->_helper->layout()->disableLayout(true);
 }