Connecting Products to Cart

We’re looking at sessions because we need somewhere to keep our shopping cart. We’ll cover sessions in more depth in a future chapter, but for now, let’s move on to implement the cart.

We’ll keep things simple. A cart contains a set of products. Based on the initial guess at the application data diagram combined with a brief chat with our customer, we can now generate the Rails models and populate the migrations to create the corresponding tables:

depot> bin/rails generate scaffold LineItem product:references cart:belongs_to

depot> bin/rails db:migrate