UPDATE

crop_simulation/growth_simulation.py

@@ -10,6 +10,7 @@ import logging
 from django.core.paginator import EmptyPage, Paginator
 
 from farm_data.models import SensorData
+from farm_data.services import get_canonical_farm_record, get_runtime_plant_for_farm
 from plant.gdd import calculate_daily_gdd, resolve_growth_profile
 from weather.models import WeatherForecast
 
@@ -775,14 +776,10 @@ class CurrentFarmChartSimulator:
 
         resolved_plant_name = plant_name
         if not resolved_plant_name:
-            sensor = (
-                SensorData.objects.prefetch_related("plants")
-                .filter(farm_uuid=farm_uuid)
-                .first()
-            )
+            sensor = get_canonical_farm_record(farm_uuid)
             if sensor is None:
                 raise GrowthSimulationError("مزرعه پیدا نشد.")
-            plant = sensor.plants.first()
+            plant = get_runtime_plant_for_farm(sensor)
             if plant is None:
                 raise GrowthSimulationError("گیاهی برای مزرعه انتخاب شده پیدا نشد.")
             resolved_plant_name = plant.name