Exempt product variations from object caching to fix variation selection buttons

exempt-product-variations-from-object-caching.php

/**
 * Exempt product variations from object caching to fix variation selection buttons
 * 
 * This fixes an issue where variation buttons disappear when object caching is enabled
 * on Pressable or any other hosting.
 */
add_filter('advanced_post_cache_skip_for_post_type', 'oleomontreal_exempt_variations_from_cache', 10, 2);
function oleomontreal_exempt_variations_from_cache($return_me, $post_type) {
    $exempted = array('product_variation');
    if (in_array($post_type, $exempted)) {
        return true;
    }
    return $return_me;
}

// Additional exemption for product attributes taxonomy if needed
add_filter('advanced_post_cache_skip_for_taxonomy', 'oleomontreal_exempt_taxonomies_from_cache', 10, 2);
function oleomontreal_exempt_taxonomies_from_cache($return_me, $taxonomy) {
    $exempted = array('product_cat', 'product_tag', 'pa_color', 'pa_size');
    if (in_array($taxonomy, $exempted)) {
        return true;
    }
    return $return_me;
}