缺货时如何预购Drupal商业产品？

Question

I am using Drupal Commerce 7 module. How it is possible to pre-order commerce product even it is showing out of stock ? For example - product will be shown out of stock but customer can pre-order that product and give payment, so when the product is available we can deliver it to customer. Is this possible, by which drupal module?

Answer 1

Normally the functionality to prevent an out of stock product to be added to the cart is a rule . So to add an out of stock product to the cart you have these options:

1) Edit/Override the related rule.

2) Use a contrib module (that does the same thing) such as commerce_stock , commerce_preorder etc.