更新 ContestRank的生成方法

submission/views.py

@@ -53,9 +53,9 @@ class SubmissionAPIView(APIView):
                 logger.error(e)
                 return error_response(u"提交判题任务失败")
             # 修改用户解题状态
-            problems_status = json.loads(request.user.problems_status)
-            problems_status[str(data["problem_id"])] = 2
-            request.user.problems_status = json.dumps(problems_status)
+            problems_status = request.user.problems_status
+            problems_status["problems"][str(data["problem_id"])] = 2
+            request.user.problems_status = problems_status
             request.user.save()
             # 增加redis 中判题队列长度的计数器
             r = redis.Redis(host=redis_config["host"], port=redis_config["port"], db=redis_config["db"])