Automatic pre-order from a remote warehouse

Thanks to this refinement, you can simultaneously sell goods that are "in stock" - from your local warehouse, and the same goods from a remote warehouse of the supplier - "on order" - with stock control and automatic warehouse selection.

Changing the status of the availability of an item "in stock", "out of stock" and "pre-order" occurs automatically when adding an item to the cart, changing the quantity in the cart or when editing an order in the admin panel.

The quantity in any of the warehouses can be zero, greater than zero, or infinity (empty field). On the storefront, in the product card, by default, the variant that is available in one of the warehouses is displayed.

The new field "Pre-order" is displayed in the admin panel both in the product card and in the list of products, and participates in export / import.

To test a module:

one)   Click the "Watch Demo" button.

2)   Open any product in the administration panel and set the value of the "Quantity" field, for example, 2, and "Pre-order" - 5.

3)   Save changes and open this product on the site.

4)   Now try adding it to the cart and changing the quantity using + and - (Note that, unlike the standard functionality, when you change the quantity, the item is immediately added or removed from the cart).

five)   As soon as there are more items in the basket than we have in stock, i.e. more than 2, the status of availability changes to "Pre-order", and after placing an order it will be debited from the corresponding warehouse.

6)   Place an order and try to change the quantity of goods in the order as well.