The cart block provides an itemized breakdown of the contents of a cart.
The cart block is for display purposes, and has the following characteristics:
Summarizes the cart with an itemized list, with each item’s quantity and price
Displays any applied discounts
Indicates both the subtotal of the cart’s added items (before discounts) and the overall total cost
Does not allow you to update the quantities of items
The default implementation uses the theme for table to handle displaying the cart contents. The cart object is not added to the render array, so if you are altering the table that is used you will need to access the cart object from the cart storage service.
Important
You cannot have a cart block and a cart form block on the same webpage, as this will prevent the cart form block from updating correctly.