WordPress Guest Author - How can I use custom fields to create guest author link?

WordPress Guest Author - How can I use custom fields to create guest

author link?



We are posting articles authored by guest authors. The guest authors will

not be logging in to the site.

I've added a function so that my guest authors name will appear in place

of the name of WordPress user who posted the article.. This function is

outlined here:

http://www.wpbeginner.com/wp-tutorials/how-to-rewrite-guest-author-name-with-custom-fields-in-wordpress/

Using this, I am able to change the name of the author to display the

guest blogger's name.. However the author link still points to the author

page of the WordPress user who posted the article.

So now I'd like to do something similar with the author link. What I would

like to do is for the author link to come from a URL that I will enter in

a custom field.

This is the code I'm using, but it's not working. The author link still

takes you to the author page for the WordPress user who posted the

article.

add_filter( 'the_author_posts_link', 'guest_author_link', 10, 3);

add_filter( 'get_author_posts_url', 'guest_author_link', 10, 3);

add_filter( 'the_author_link', 'guest_author_link', 10, 3);

add_filter( 'get_author_link', 'guest_author_link', 10, 3);

function guest_author_link($link, $author_id, $author_nicename) {

global $post;

$url = get_post_meta( $post->ID, 'guest-url', true );

if( $url ) {

$link = $url;

}

return $link;

}

Ideas?? Help...