update hatching

app/views.py

@@ -975,7 +975,7 @@ class HatchingsViewSet(viewsets.ModelViewSet):
                 hatching.PedigreeName = BREED_STANDARDIZATION[hatching.PedigreeName]
             hatching.KillingAve = ave_age
             hatching.samasat_discharge_percentage = int(
-                ((hatching.Evacuation + bars_quantity) / hatching.ChickCountSum) * 100)
+                ((hatching.Evacuation + bars_quantity) / hatching.ChickCountSum) * 100) if hatching.ChickCountSum > 0 else 0
             hatching.save()
         else:
             print('تعداد حمل صفر است')