Basket Subsystem

This tracks products intended to be purchased, often providing some additional state such as which runs under a program a user is purchasing.

A simple schema for this would be:

class Basket(TimestampedModel):
    """Represents a User's basket."""

    user = models.OneToOneField(settings.AUTH_USER_MODEL)

class BasketItem(TimestampedModel):
    """Represents one or more products in a user's basket."""

    product = models.ForeignKey(Product)
    basket = models.ForeignKey(Basket)
    quantity = models.PositiveIntegerField()

APIs

• GET  /api/v0/basket/ -> get the current basket state

• POST /api/v0/basket/ -> update the basket state

Notes

The implementation of this would use the discount subsystem to calculate the discounted prices, those values would be returned in the API for the frontend to use for display purposes.