挂钩到add\\u to\\u cart挂钩

add_action(\'woocommerce_add_to_cart\', \'create_files_for_cart\');

function create_files_for_cart() {
 // Your code that created the file using the dated the user selected

 // More code to add the file created to cart

}

使用将产品添加到购物车Cart class 功能

您使用this plugin 将日期字段添加到产品。