Adding Gravatar to rss feed

Question

So I have a mailchimp email that goes out and shows the latest posts that have been made on the site. The users on the site all have gravatars and I want to include that in the rss feed so that I can point the mailchimp image reader to them.

I have tried using snippets like:

<?php echo get_avatar( get_current_user_id(), 48 ); ?>

or

<?php echo get_avatar( get_author_email(), 48 ); ?>

and adding that to the rss template in /wp_includes (I would love to do it in functions.php but honestly I just want it to work for this one site so I don't care how I get it done).

It's curious because when I do searches I can only find people trying to figure out how to remove it instead of insert it... I am at a loss.

Answer 1

The point is, that the format have no tags for a image to a user. You must use a other tag to inlcude the avatar of a author, not the author tag. The author tag is only for a string, not markkup or images. But you can add content ot the desciption and this is easy on the filter the_content_feed.

A small example, there add content to this part in the feed.

add_filter( 'the_content_feed', 'fb_plugin_function_name' );
/**
* @param  $content Content of post
* @return string
*/
function fb_plugin_function_name( $content ) {

   $content .= 'Total ' . str_word_count( $content ) . ' words';
   return $content;
}