BP_custom

class BP_Custom_User_Ids {

    private $custom_ids = array();
    public $friends_list;

    public function __construct($friend) {
        $this->friends_list = $friend;
        $this->custom_ids = $this->get_custom_ids();
        add_action( 'bp_pre_user_query_construct',  array( $this, 'custom_members_query' ), 1, 1 );
        add_filter( 'bp_get_total_member_count',    array( $this, 'custom_members_count' ), 1, 1 );
    }

    private function get_custom_ids() {
        global $wpdb;
        $f_id =  $this->friends_list;
        $query =   " SELECT user_id  "
                   . " FROM " . $wpdb->prefix  . "bp_xprofile_data "
                   . " WHERE user_id IN({$f_id}) "
                   . " GROUP BY user_id "
                   . " UNION "
                   . " SELECT user_id  "
                   . " FROM " . $wpdb->prefix  . "bp_xprofile_data "
                   . " WHERE user_id NOT IN({$f_id}) "
                   . " GROUP BY user_id ";

        // collection based on an xprofile field
        $custom_ids_list = $wpdb->get_col( $query );
        if (!empty( $custom_ids_list )) {
            $custom_ids_str =  implode(",", $custom_ids_list);
            return $custom_ids_str;
        }
        else
            return '';
    }

    function custom_members_query( $query_array ) {

        $query_array->query_vars['user_ids'] = $this->custom_ids;

        //in case there are other items like widgets using the members loop on the members page
        remove_action( 'bp_pre_user_query_construct', array( $this, 'custom_members_query' ), 1, 1 );

    }

    function custom_members_count ( $count ) {

        $new_count = count( $this->custom_ids );
        return $count - $new_count;

    }
}