Print backtrace if washing fails

management/commands/wash.py

@@ -1,3 +1,4 @@
+from __future__ import print_function
 from django.core.management.base import BaseCommand, CommandError
 
 from lasana.models import Meal
@@ -9,14 +10,22 @@ class Command(BaseCommand):
     help = 'Deletes expired meals'
 
     def handle(self, *args, **options):
-        now = timezone.now()
-        old_meals = Meal.objects.all().order_by("expiration_time")
+        try:
+            now = timezone.now()
+            old_meals = Meal.objects.all().order_by("expiration_time")
 
-        for meal in old_meals:
-            if meal.is_expired(now):
-                meal_id = meal.id
+            for meal in old_meals:
+                if meal.is_expired(now):
+                    meal_id = meal.id
 
-                meal.delete()
-                self.stdout.write('Thrown away expired meal "%s"\n' % meal_id)
-            else:
-                break
+                    meal.delete()
+                    self.stdout.write('Thrown away expired meal "%s"\n' % meal_id)
+                else:
+                    break
+        except:
+            import traceback
+            import sys
+            print("----------------------------------------")
+            print("Failed to wash meals.", file=sys.stderr)
+            traceback.print_exc(sys.stderr)
+            print("----------------------------------------")