django add to cart
- Create a view for adding items to the cart.
- Define a function in the view to handle the addition of items to the cart.
- Retrieve the product from the database based on the product ID.
- Create an instance of the cart if it doesn't exist, and if it does, retrieve the existing cart.
- Add the product to the cart or update the quantity if it already exists.
- Save the cart instance.
- Return a response indicating the item has been added to the cart.