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Diffstat (limited to '')
| -rw-r--r-- | pyblackbird_cc/payments/models.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pyblackbird_cc/payments/models.py b/pyblackbird_cc/payments/models.py index 81bb1c8..b947a22 100644 --- a/pyblackbird_cc/payments/models.py +++ b/pyblackbird_cc/payments/models.py @@ -1,4 +1,5 @@ from django.conf import settings +from django.core.exceptions import ValidationError from django.db import models from pyblackbird_cc.resources.models import Resource @@ -27,6 +28,8 @@ class ShoppingCart(models.Model): return f"Shopping Cart for {self.user.username}" def add_resource(self, resource: Resource): + if CartItem.objects.filter(cart=self, resource=resource).exists(): + raise ValidationError(f"{resource.name} is already in your shopping cart.") item, created = CartItem.objects.get_or_create( cart=self, resource=resource, |