Appending a variable to RSS link url

Question

I have a rss feed for my demo blog here.

http://clickquickcash.com/feed/?user=john

It passes the 'user' variable 'john' into the feed posts.

I need to add the 'user' variable to the link.

Note - I had to replace my domain with 'websiteurl' below as this site wouldn't let me post more than 1 link as new user

websiteurl/this-is-a-test-2/

becomes...

websiteurl/this-is-a-test-2/john websiteurl/this-is-a-test-2?user=john

Please can someone tell me what I need to change in the function.php or feed.php files.

Thanks

Answer 1

add the following to your functions.php file:

add_filter('feed_link','my_site_feed', 10, 2);
function my_site_feed($url, $feed_type ){
    $user = my_get_the_username(); //this function should return the username.
    return add_query_arg( array('user' => $user ), $url );
}

And get your rss feed url using:

echo get_bloginfo('rss2_url');

or

bloginfo('rss2_url');