CODEWITHSUNDEEP
pythondjango
ebong
ebong

Reputation: 65

Calculate order total in django ecommerce

So I am building an e-commerce website to advance my knowledge in python . So far my learning curve is going good . I am wondering on how to calculate cart total .

I have my product model 

def Products(models.Model):
    price=models.Decimalfield(default=2.50,null=True,decimal_places=2)
    quantity=models.InterField(default=4,null=True)


def Cart(models.Model):
     total=models.DecimalField(default=0.0,decimal_places=2)
     products=models.ManyToManyField(Products,null=True)

Lets assume a user added 2 products in the cart

First product

Product.quantity=3, Product.price=$40

Second Product

Product.quantity=5, Product.price=$20

What will be the best way to calculate my cart total.

I tried this, I created a save function under the cart model 

def save(self,*args,**kwargs):
    if self.id:
       total=0.00
       products=self.products.all()
       total=math.fsum(pro.price * pro.quantity for pro in products)
       self.total=total
     super(Cart,self).save(*args,**kwargs)

But this does not work out for me, please I need help. Thanks in Advance

Upvotes: 0

Views: 634

Answers (1)

ebong
ebong

Reputation: 65

The code is working perfectly, i had a typo error for the field. Thanks guys for the contribution.

Upvotes: 1

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