Question

I am building a small project that allows a user to get funding for a project.

A project has a field called “amount_raised” that might house an integer such as “123.34”

when a successful payment is done through paypal you receive the ipn_obj of which one contains some financial info, i.e. ipn_obj.mc_gross which might be “10.23”

how do I perform a calculation in django to get the total value of that?

It’s the first time I have dealt with calculations in django so bear with me.

If I try converting them to integers I get an error invalid literal for int() with base 10

Your help is much appreciated.

Answer 1

A number like 123.45 is not an integer. What you need is a DecimalField. Example usage:

models.DecimalField(…, max_digits=5, decimal_places=2)