Pass IDs to pre_get_posts query in function

Question

I am trying to pass the post ids to the function\'s query->set and function will return the posts.

add_action( \'pre_get_posts\', \'query_booked_posts\' );

func         


        

Answer 1

Except the extra array() over $results_separated, in my case I had to apply

if (!$query->is_main_query()) {
    return $query;
}

at the top of my function (found it in, otherwise, queries inside would be executed for several times and not properly. Comments in the answer helped me to figure this out.