@RequestMapping(value = "/delete_survey_template/{surveyID}", method = RequestMethod.GET)
 public String deleteSurveyTemplate(@PathVariable("surveyID") int id, ModelMap model) {
   ArrayList<SurveyResult> surveyResults = surveyResultDao.getAllSurveyResultsBySurveyId(id);
   if (surveyResults.isEmpty()) {
     surveyTemplateDao.deleteSurveyTemplate(id);
     return "redirect:/manage_survey_templates";
   } else {
     return "redirect:/manage_survey_templates?failed=true";
   }
 }