E-Commerce Class Hierarchy

[Sebarry]

Hi,

 

I'm new to Object Orientation and I'm trying to write a set of classes for an E-Commerce project. The classes are to represent the interaction between purchaseable products, a shopping basket to hold them in and customers. Here's the code I've got so far.

 

public class Product 
{
    private $title = "";
    private $description = "";

    public function __construct( $title, $description ) 
    {
        $this->title = $title;
        $this->description = $description;
    }

    .....
}

public class ShopProduct extends Product implements Chargeable
{
     private $images;
     private ProductSize $sizes;

     ....
}

public class ProductSize
{
     private $sizeDescription;
     private $price;
     private $stockStatus;
     private $colour;

     ....
}

public class ShoppingBasket 
{
    private Product $items;
    private $quantity;

    ...
}

public class Customer
{
    private $firstName;
    private $lastName;
    ...
    private ShoppingBasket $basket;
    ...
}

 

Do this look ok? The idea is to have a generic Product class that has the bare minimal details of a product, namely a title and description. A ShopProduct extends this so that image and size information can be stored. The image information is just a string array of filenames. The size information is the actual size, price, colour and stock status i.e. Large, £5.00, Blue and In Stock. The ShoppingBasket should be capable of holding Products i.e. either Products or Shop Products. However, what is actually stored in the basket is not a Product but a ProductSize. Does that make sense? or do I need a separate class of Item? It doesn't really work at the moment anyway because $items in ShoppingBasket is an array of Products or ProductSizes and quantity is a single scalar value. Quantity really needs to be store for each Product or ProductSize that's in the basket.

 

Any help most appreciated.

 

Thanks,

 

Sean