This document outlines the various components and considerations involved in developing shopping basket functionalities for e-commerce applications. Key methods include one-click payments, service subscription payments, and auction models, along with operational details for managing basket contents and user interactions. It emphasizes the importance of stock management, product variations, and template structures to enhance the user's online shopping experience.

1. CMP-3110 ~ E-Commerce Applications Development
Chapter 06
The Shopping Basket

2. Shopping baskets
• Shopping baskets the first stage in enabling an online purchase
• Number of other methods that can facilitate e-commerce, including:
• One-click payments
• Service subscription payments
• Auctions (Nilami)

3. Shopping baskets
• One-click payments:
• customer clicks on the button
• payment is processed
• payment processor notifies the administrator:
• Customer
• delivery details
• the amount paid
• the product and cost data is defined within the payment button
• Disadvantage:
• customers can easily order things by mistake
• customers need to be sure their default delivery details are correct in advance
• it isn't easy to add voucher codes without adding more clicks

4. Shopping baskets
• One-click payments:

5. Shopping baskets
• Service subscription payments:
• generally similar to one-click payments; you click on the subscription level,
and then you pay.
• Subscription sites give access to products or services for the duration of a
subscription, from a business perspective
• This often allows measurable recurring income, and can reduce transaction
fees

6. Shopping baskets
• Auctions
• Auctions lead to bidding for products
• The customer commits to purchase the product at a certain price
• No other customer commits to a higher price within the auction time window

7. Per-page basket
In case of no items in basket In case of basket have items

8. Per-page basket
And, our main basket page should look like this:

9. Considerations for our shopping basket
• Stock levels:
• Is there sufficient stock when a customer adds a product to their basket?
• Product variations
• Product customizations
• Templates:
• An empty basket
• summary of the basket
• Subtotals:
• We need to calculate subtotals for each product in the basket

10. Basket database

11. Basket database

12. Basket contents
• We have a basket structure in our database, but we now need to
allow our customers to control the contents of the basket
• Allowing them to:
• View the basket
• Add products to their basket
• Add customizable products to their basket
• Add variations of a product to their basket
• Edit quantities of products in their basket

13. Viewing the basket
• CheckBasket method
1. Why are we using before adding the product?
2. customer adds a product to their basket twice
3. The second instance should increment the quantity of the first instance of
the product

14. Adding products
• we only need to record
• The product's ID number
• Information of the user
• addProduct method
• First, we check that the product is valid and active
• Secondly, we check that it is not a customizable product or variations
• Finally, we check to see if the product is already in the basket
• If it is, then we increment the product's quantity in the basket
• if it isn't, then we add it to the basket.

15. Adding customizable products
• To facilitate the purchase of such products, there are a number of
things we need to do:
• Restructure the basket database
• adding a field to store the uploaded file field to store custom text
• Change how we view the shopping basket
• Change how we add a product to the basket
• Process the customized information, if the product was customizable

16. Adding product variants

17. Editing quantities
• customer wants to change the quantity
• The hope here is obviously that they will increase the quantities and purchase
more
• But equally, we need to allow them to reduce quantities or remove products
• updateBasket()

18. Cleaning the basket
• The customer wants to empty their basket
• The customer confirms an order
• The basket contents are old and are not tied to a customer account

19. Displaying the basket on every page
• Most e-commerce websites display a small shopping basket at the top
of the page or the side of the page, reminding the customer how
many products are in their basket
• To display the basket on each page we will need:
• An empty basket template file
• A basket template file, which displays the number of products in the
customer's basket
• A template tag in our main templates
• Something in our framework to link into the basket on each page