Ok, i solved it by myself.
I am using the plugin “Relevanssi” wich is not searching the ID by default.
But, if I add the following filter to functions.php of my theme it will do exactly what i want. And it wors with “Search & Filter” plugin
Here is the code snippet for the functions.php:
add_filter(‘relevanssi_content_to_index’, ‘rlv_index_post_id’, 10, 2);
function rlv_index_post_id($content, $post) {
$content .= ” ” . $post->ID;
return $content;
Hope it helps somebody….
Thanks – I was going to suggest Relevanssi but wasn’t sure if it was capable of searching IDs – thanks for the code snippet 🙂
Hey, no problem. Been a pleasure..