This seems like it should be simple, but I'm getting errors.
I have a model tracking individual purchases. User inputs an item cost
and quantity; I want the total cost calculated. Here are the relevant
parts:
class Item(models.Model):
name = models.CharField(max_length=100)
price = models.DecimalField(max_digits=9, decimal_places=2)
quantity = models.IntegerField(default=1)
total_cost = models.DecimalField(max_digits=12,
decimal_places=2,
blank=True,
null=True,
editable=False)
def total_cost(self):
total = (self.price * self.quantity)
return total_cost(total)
def save(self):
self.total_cost = self.total_cost()
super(Item, self).save()
The error I get is:
NameError at /admin/spending/item/add/
global name 'total_cost' is not defined
Not sure what that means. Thoughts? Am I missing an exceedingly
obvious way to do this?
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