can somebody help with this please, am building an ecommerce web and when i want to view my cart i get this error AttributeError: 'NoneType' object has no attribute 'price'
here is my models.py class OrderItem(models.Model): product = models.ForeignKey(Product, on_delete=models.SET_NULL, null=True) order = models.ForeignKey(Order, on_delete=models.SET_NULL, null=True) quantity = models.IntegerField(default=0, null=True, blank=True) date_added = models.DateTimeField(auto_now_add=True) @property def get_total(self): total = self.product.price * self.quantity return total AttributeError at /cart/ 'NoneType' object has no attribute 'price' Request Method: GET Request URL: http://127.0.0.1:8000/cart/ Django Version: 3.2 Exception Type: AttributeError Exception Value: 'NoneType' object has no attribute 'price' Exception Location: C:\Users\Admin\PycharmProject\MyProject\Ecommerce\shop\models.py, line 71, in get_total Python Executable: C:\Users\Admin\PycharmProject\MyProject\venv\Scripts\python.exe Python Version: 3.8.2 Python Path: ['C:\\Users\\Admin\\PycharmProject\\MyProject\\Ecommerce', 'C:\\Users\\Admin\\AppData\\Local\\Programs\\Python\\Python38\\python38.zip', 'C:\\Users\\Admin\\AppData\\Local\\Programs\\Python\\Python38\\DLLs', 'C:\\Users\\Admin\\AppData\\Local\\Programs\\Python\\Python38\\lib', 'C:\\Users\\Admin\\AppData\\Local\\Programs\\Python\\Python38', 'C:\\Users\\Admin\\PycharmProject\\MyProject\\venv', 'C:\\Users\\Admin\\PycharmProject\\MyProject\\venv\\lib\\site-packages'] Server time: Wed, 12 May 2021 08:44:09 +0000 -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAL8t8eqL%3Dq6qMeBnk2Nq_TO%3D%3DivFvpuYuCR%3DkgtXv2H%3DHCkaQg%40mail.gmail.com.