Add extra body classes

# BODY CLASS ADD ONS
add_filter('body_class', 'extra_body_class');
function extra_body_class($classes) {
 	global $wp_query;
 	// Add current slug on body class
 	$current_id = $wp_query->post->ID;
 	$post = get_post($current_id);
 	$slug = $post->post_name;
 	$classes[] = 'body-'.$slug;
 	$classes[] = sanitize_html_class( str_replace( '.', '-', get_page_template_slug( $current_id ) ) );
 	return $classes;
}