Although Woocommerce has a wide range of customization options that can be accessed from the Admin interface, there might be scenarios in which you will have to extend the capability of Woocommerce. As we have been building a Woocommerce site using the Builder, we ran across the need of adding a custom message to a product. Basically allow users to provide a personal message that will be engraved in the product once it is purchased. An easy way to solve this problem is to buy and install a plugin for Woocommerce, or to assume that “custom message” is a feature of all products and allow the shop administrator to choose the products for which this field should be displayed. In short, the solution could be to add two fields:
- Allow Custom Message
- Custom Message
The link below show a tutorial on how to add custom fields to the Woocommerce interface.
http://www.remicorson.com/mastering-woocommerce-products-custom-fields/