code: def page(self, course, aggregationid):
          
          aggregation = self.database.aggregations.find_one({"_id": ObjectId(aggregationid)})
  
          data = list(self.database.submissions.aggregate(
              [
                  {
                      "$match":
                          {
                              "courseid": course.get_id(),
                              "username": {"$in": aggregation["students"]}
                          }
                  },
                  {
                      "$group":
                          {
                              "_id": "$taskid",
                              "tried": {"$sum": 1},
                              "succeeded": {"$sum": {"$cond": [{"$eq": ["$result", "success"]}, 1, 0]}},
                              "grade": {"$max": "$grade"}
                          }
                  }
              ]))
  
          tasks = course.get_tasks()
          result = dict([(taskid, {"taskid": taskid, "name": tasks[taskid].get_name(self.user_manager.session_language()), "tried": 0, "status": "notviewed",
                                   "grade": 0, "url": self.submission_url_generator(aggregationid, taskid)}) for taskid in tasks])
  
          for taskdata in data:
              if taskdata["_id"] in result:
                  result[taskdata["_id"]]["tried"] = taskdata["tried"]
                  if taskdata["tried"] == 0:
                      result[taskdata["_id"]]["status"] = "notattempted"
                  elif taskdata["succeeded"]:
                      result[taskdata["_id"]]["status"] = "succeeded"
                  else:
                      result[taskdata["_id"]]["status"] = "failed"
                  result[taskdata["_id"]]["grade"] = taskdata["grade"]
  
          if "csv" in web.input():
              return make_csv(result)
  
          results = sorted(list(result.values()), key=lambda result: (tasks[result["taskid"]].get_order(), result["taskid"]))
          return self.template_helper.get_renderer().course_admin.aggregation_info(course, aggregation, results)
docs: Get all data and display the page