In this chapter, I continue to build the SportsStore example app. In the previous chapter, I added the basic support for a shopping cart, and now I am going to improve on and complete that functionality.
Refining the Cart Model with a Service
I defined a Cart model class in the previous chapter and demonstrated how it can be stored using the session feature, allowing the user to build up a set of products for purchase. The responsibility for managing the persistence of the Cart class fell to the Cart controller, which explicitly defines methods for getting and storing Cart objects.
