Including post_type = ‘wiki’ in author archives

For a user with wiki-update permission only, I want to list their wiki articles in the author archive page. Currently, it comes back with “NOT FOUND Apologies, but …”.

I am using the Twenty-ten child theme and created a custom loop-wiki.php but now have a block about how to proceed. Any ideas? Anyone? I’ve searched and found similar type discussion but nothing stands out.

Thanks!

Author archives default to searching for posts of the post type post. You could override this with wiki like so;

function wpse_11210_set_wiki_for_author( $query ) {
    if ( $query->is_main_query() && $query->is_author() )
        $query->set( 'post_type', 'wiki' );
}

add_action( 'pre_get_posts', 'wpse_11210_set_wiki_for_author' );

Drop it in your a plugin or your theme’s functions.php (if the file doesn’t exist, create it).