/** Render a vacancy's details
  * @access public
  * @throws Pas_Exception_Param if missing parameter on URL.
  */
 public function vacancyAction()
 {
     if ($this->getParam('id', false)) {
         $this->view->vacs = $this->_vacancies->getJobDetails($this->getParam('id'));
     } else {
         throw new Pas_Exception_Param($this->_missingParameter, 500);
     }
 }