JNews || Filter Query Search Page

/**
 * Filter Query Search Page
 *
 * @param mixed $query
 * @return void
 */
function include_pages_in_search( $query ) {
    if ( $query->is_search() && $query->is_main_query() && ! is_admin() ) {
        $query->set( 'post_type', array( 'post', 'page' ) );
    }
}
add_action( 'pre_get_posts', 'include_pages_in_search' );