Displaying Co-Authors in Thesis Theme

coauthor_post_avatar.php

<?php
/* ------ [ Display Post Avatars w/ Co-Author Alternate ] ------ */
function custom_author_post_avatar(){
	if(is_home() || is_single()){
		if ( function_exists( 'get_coauthors' ) && 1 == count( get_coauthors( get_the_id() ) ) ) {
			if(get_query_var('author_name')){
				$curauth = get_userdatabylogin(get_query_var('author_name'));
			}else{
				$curauth = get_userdata(get_query_var('author'));
			}
			?>
			<div class="author_grav">
				<a href="<?php echo get_bloginfo ( 'url' ); ?>/author/<?php echo get_the_author_meta( 'user_login' ); ?>"><?php get_avatar( get_the_author_email(), '50' ); ?></a>
			</div>
			<?php } else { ?>
			<div class="author_grav">
				<a href="<?php echo get_bloginfo ( 'url' ); ?>"><img src="LOGO" width="50" /></a>
			</div>
			<?php
		}
	}
}
add_action('thesis_hook_before_headline', 'custom_author_post_avatar');

?>

coauthor_post_byline.php

<?php

/* ------ [ Display Co-Authors in the Byline ] ------ */
function multi_authors() {
if( function_exists( 'get_coauthors' ) ) {
	$i = new CoAuthorsIterator();
	$return = '<p class="headline_meta">by <span class="author vcard">';
	$i->iterate();

	$return .= '<a href="'.get_author_posts_url(get_the_author_meta('ID')).'">'.get_the_author_meta('display_name').'</a>';

	while($i->iterate()){
		$return.= $i->is_last() ? ' and ' : ', ';
		$return .= '<a href="'.get_author_posts_url(get_the_author_meta('ID')).'">'.get_the_author_meta('display_name').'</a>';
	}

	$return .= '</span> on <abbr class="published" title="'.get_the_time('jS F Y').'">'.get_the_time('jS F Y').'</abbr></p>';

	echo $return;
} else { ?>
	<p class="headline_meta">by <?php thesis_author(); ?></p>
<?php }
}
add_action('thesis_hook_after_headline', 'multi_authors');

?>

coauthor_rss.php

<?php

/* ----- [ Display Co-Authors In RSS ] ----- */
function coauthors_in_rss( $the_author ) {
if ( !is_feed() || !function_exists( 'coauthors' ) )
	return $the_author;
	return coauthors( null, null, null, null, false );
}
add_filter( 'the_author', 'coauthors_in_rss' );

?>

coauthor_teaster_byline.php

<?php

/* ----- [ Display Co-Authors in Teaser Byline ] ---- */
function multi_authors_teaser() {
	if(function_exists( 'get_coauthors' )) {
		$i = new CoAuthorsIterator();
		$return = 'by <span class="teaser_author">';
		$i->iterate();
		$return .= '<a href="'.get_author_posts_url(get_the_author_meta('ID')).'">'.get_the_author_meta('display_name').'</a>';
		while($i->iterate()){
			$return.= $i->is_last() ? ' and ' : ', ';
			$return .= '<a href="'.get_author_posts_url(get_the_author_meta('ID')).'">'.get_the_author_meta('display_name').'</a>';
		}
		$return .= '</span> on <abbr class="teaser_date published" title="'.get_the_time('jS F Y').'">'.get_the_time('jS F Y').'</abbr>';
	} else {
		$return = 'by <span class="teaser_author">';
		$return .= '<a href="'.get_author_posts_url(get_the_author_meta('ID')).'">'.get_the_author_meta('display_name').'</a>';
		$return .= '</span> on <abbr class="teaser_date published" title="'.get_the_time('jS F Y').'">'.get_the_time('jS F Y').'</abbr>';
	}
	echo $return;
}
add_action('thesis_hook_after_teaser_headline', 'multi_authors_teaser');

?>