Chapter 11. The Winestore Shopping Cart
In this chapter, we introduce the shopping cart developed for the online winestore. The shopping cart is typical of those used in online stores: the user can add items to the cart and manage the quantities of the different items. The solution we outline is scalable and practical. The cart data is stored in the winestore database tables, and only one session variable per user is required to track the cart’s identity.
This chapter is the second of four that outline the complete winestore application. As discussed in Chapter 10, the descriptions of the scripts aren’t comprehensive, and we assume you’ve read Chapter 2 to Chapter 9 as background. Also, we encourage you to install a local copy of the application and to view, edit, and use the scripts while reading this chapter.
We present here the four scripts that manage the shopping cart, a fifth script that produces the home page that includes the Hot New Wines panel, and a sixth script that manages redirection to other pages when the user clicks on buttons.
The scripts in this chapter perform the following functions:
- Present the home page
- View the shopping cart
Query the database and display the contents of the user’s shopping cart
- Add items to the cart
Add a quantity of a specific wine to the user’s shopping cart
- Empty the cart
Delete all the items in the cart and remove the cart
- Update quantities
Manage changes ...