Disable add to cart button for an array of products IDs in WooCommerce

Question

In WooCommerce, I\'m trying to disable add to cart button for an array of product IDs but I can\'t find the problem.

I am trying to use this function:

Answer 1

Updated for WooCommerce 3+

Use in_array() instead like:

add_filter('woocommerce_is_purchasable', 'filter_is_purchasable', 10, 2);
function filter_is_purchasable($is_purchasable, $product ) {
    if( in_array( $product->get_id(), not_purchasable_ids() ) {
         return false;
    } 
    return is_purchasable;
}

Where not_purchasable_ids() is the function that returns an array of non purchasable products Ids (here simplified):

function not_purchasable_ids() {
     return array( 37, 53, 128, 129 );
}

This code goes in functions.php file of your active child theme (or active theme). Tested and works.