fix: 更正二代时间显示

apps/counter/api/serializers.py

@@ -1,4 +1,4 @@
-import time
+import pytz
 from typing import Optional
 from django.db.models import Q, Min, Max
 from django.core.cache import cache
@@ -286,6 +286,13 @@ class DeviceInfoSerializer(serializers.ModelSerializer):
         return None
 
     def get_time(self, obj):
+        # 区分一代和二代设备
+        if obj.chip_type == 'AIR-V2':
+            if self.mosq_device_info and self.mosq_device_info.update_time:
+                eastern = pytz.timezone('Asia/Shanghai')
+                update_time = self.mosq_device_info.update_time.astimezone(eastern)
+                return update_time.strftime('%Y-%m-%d %H:%M:%S')
+
         if self.latest:
             return self.latest['data_time'].replace('T', ' ').replace('Z', '')
         return None