Mise à 0 du solde quand pas de vente

7 years ago · e11ad583cb
1 changed files with 1 additions and 1 deletions
--- a/comet/account/models.py
+++ b/comet/account/models.py
@ -19,7 +19,7 @@ class Account(models.Model):
        """Adjust the ballance according to the sales,
        without saving the model."""
        self.balance = Sale.objects.filter(account=self)\
-            .aggregate(models.Sum('price'))['price__sum']
+            .aggregate(models.Sum('price'))['price__sum'] or 0
 class Sale(models.Model):