I am working with the book agile Web Development second edition, and in page 110 there is an example i how to create the model CartItem.
I am using rails 2.0 and after adding the class CartItem I get an error at the constructor Initialize
class CartItem < ActiveRecord::Base attr_reader :product, :quantity
def initialize(product) @product = product @quantity = 1 end
it underlines the word "initialize" and says "Subclass does not call super in constructor"