How to add up an array's element with a rails way?

[Kevin_Fu]

Hi,

I have a method like this, calculating the sub_total in an order model:

def sub_total result = 0 for item in self.order_items result += item.price end result end

Is there a rails way to make the method more simple and concise?

Thank you

[Frederick_Cheung]

Hi,

I have a method like this, calculating the sub_total in an order model:

def sub_total result = 0 for item in self.order_items result += item.price end result end

Is there a rails way to make the method more simple and concise?

Have a peak at the sum method

Fred

[Sandip]

use active record sum method

self.order_items.sum( :price )

-Sandip