Can't place two custom post types into the Wordpress search query?

Question

I placed the following code into my functions.php file:

function filter_search($query) {
    if ($query->is_search) {
    $query->set('post_type', array('topic', 'reply'));
    };
    return $query;
};
add_filter('pre_get_posts', 'filter_search');

With that code I can only search for the reply custom post type (results with the topic custom post type don't show up).

Both are custom post types from the bbpress 2.0 plugin.

I have to do this:

$query->set('post_type', array('topic'));

in order to make the topic custom post type show up (but them I no longer get the reply custom post type to show up in the results).

Any suggestions to fix this?

Answer 1

Try to drop that in your functions.php file:

function filter_query_for_search( $query ) {
    if ( isset( $query['s'] ) ) {
        $query['post_type'] = array('forum', 'topic', 'reply', 'any');
    }
    return $query;
}

add_filter('request', 'filter_query_for_search', 1);

that would hook into the query just before its being executed.