the possibility to choose several variants as in the case of a color and size variant

[Karbal]

If we take the example of a product with two variants color and size, therefore to add product in cart we must select a color in variant colors and a size in variant sizes.

With the structure of the cart we won't be able to do this kind of manipulation.

My Solution

{
  "Cart" : {
     ...
     products: ["productId":....,
"shopId":.....,
"addedAt":....,
"position": ....,
"quantity":.....,
         "items": []
     ]
  }
}

is to group the selection items of each catalog product.

[Alvaro Bueno]

there's no problem states in this ticket. @karbal currently this is something that works now