修复查询不到room_id会报错的问题

Controller/SensorGateway/SmartSceneController.py

@@ -76,12 +76,16 @@ class SmartSceneView(View):
             gateway_sub_device_qs = gateway_sub_device_qs.values('id', 'device_type', 'nickname', 'status')
             sub_device_list = []
             for gateway_sub_device in gateway_sub_device_qs:
-                room_id = FamilyRoomDevice.objects.filter(sub_device=gateway_sub_device['id']).values('room_id')[0][
-                    'room_id']
-                try:
-                    gateway_sub_device['room_name'] = FamilyRoom.objects.get(id=room_id).name
-                except ObjectDoesNotExist:
+                family_room_device_qs = FamilyRoomDevice.objects.filter(sub_device=gateway_sub_device['id']).\
+                    values('room_id')
+                if not family_room_device_qs.exists():
                     gateway_sub_device['room_name'] = ''
+                else:
+                    room_id = family_room_device_qs[0]['room_id']
+                    try:
+                        gateway_sub_device['room_name'] = FamilyRoom.objects.get(id=room_id).name
+                    except ObjectDoesNotExist:
+                        gateway_sub_device['room_name'] = ''
                 gateway_sub_device.pop('id')
                 sub_device_list.append(gateway_sub_device)
             return response.json(0, sub_device_list)