bennybobw

Ok, so I’ve figured out that I have to use a different method. Here’s my working code, but I don’t understand why.

function wftp_flush_rewrite() {
  global $wp_rewrite;
  $wp_rewrite->flush_rules();
}
function wftp_vars($public_query_vars) {
    $public_query_vars[] = 'wftp';
    return $public_query_vars;
}
function wftp_add_rewrite_rules($wp_rewrite) {
  $new_rules = array(
     'wftp/(.+)' => 'index.php?wftp=' .
       $wp_rewrite->preg_index(1));
  $wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
}
add_action('init', 'wftp_flush_rewrite');
add_filter('query_vars', 'wftp_vars');
add_action('generate_rewrite_rules', 'wftp_add_rewrite_rules');
add_action('parse_query', 'wftp_init');

Solution taken from:
http://codex.wordpress.org/Custom_Queries

I’d appreciate it if someone could explain why I can’t use add_rewrite_rule in this way, since it seems like others are doing it. e.g. http://danmarvelo.us/older/2007/5/30/custom-rewrite-wordpress-add_rewrite_rule-add_rewrite_tag/

Thanks!