update

service/group.go

@@ -106,7 +106,18 @@ func (s *Service) GetGroup(gid int, userId string, admin bool) (resp *apiModel.G
 		return
 	}
 
-	resp.Tasks = taskResults
+	// 根据tasks中的created_at排序，tasks[i].id == taskResults[i].TaskId
+
+	rets := make([]apiModel.Task, len(tasks))
+	for i := range tasks {
+		for j := range taskResults {
+			if tasks[i].Id == taskResults[j].TaskId {
+				rets[i] = taskResults[j]
+				break
+			}
+		}
+	}
+	resp.Tasks = rets
 	return
 }