I don't know for sure because I haven't encountered a situation where I'd
need to do things like this... But I'll give it a shot - I'm open to
corrections..
class LineItem < ActiveRecord::Base
belongs_to :order
belongs_to :product
def self.from_cart_item(cart_item)
li = new
li.product = cart_item.product
li.quantity = cart_item.quantity
li.total_price = cart_item.price
return li
end
end
You'd simply use the new method without the self because self is used to
refer to the current instance of the object. Also, you should put return li
at the end; you don't have to, but it just makes the code easier to read.
On Wed, May 5, 2010 at 3:21 PM, dev <devin.corm...@gmail.com> wrote:
> For some reason I am tripping up on the use of self and new.
>
> class LineItem < ActiveRecord::Base
> belongs_to :order
> belongs_to :product
>
> def self.from_cart_item(cart_item)
> li = self.new
> li.product = cart_item.product
> li.quantity = cart_item.quantity
> li.total_price = cart_item.price
> li
> end
> end
>
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