购物车在轨道上的红宝石

Question

im using

def add_to_cart
  @cart = find_cart
  product = Product.find(params[:id])
  @cart.add_product(product)
end

from a book. this is to create a shopping cart. what I don't understand is, do I need a controller for my cart? because without it,its giving me an error

Answer 1

I get the feeling you're not really sure how to use Rails.

Whether or not you need a controller for you cart is up to you, however I would have one. That way you can have a "view your cart" page, as well as easily delete items.

Answer 2

原则上，除非你有一个路由，你不应该需要一个控制器Carts你的config / routes.rb文件内。

Answer 3

Yes, the above method should definitely live inside a controller. The controller should look like this:

http://media.pragprog.com/titles/rails2/code/depot_f/app/controllers/store_controller.rb