I have two models: Order and Item. There is a many-to-many relationship with a pivot table linking an Order with multiple Items. (so multiple orders can have the same card, and a card can be on multiple orders.)

I also have an additional attribute quantity in the pivot table, which has order_id and item_id.

How can I, when creating the order and saving it, add multiple items with the quantity attribute added?

The code that I currently am using (which does not work with attach()):

    $order = new Order;
    $item_quantities = [];
    foreach ($request->input('items') as $item) {
        $item_quantities[] = [Item::find($item['itemID']), ['quantity' => $item['quantity']]];
    }
    $order->items()->attach($item_quantities);
    $order->save();