WordPress / ADMIN / Add post type to admin body class

gistfile1.php

<?php
function POSTTYPE_to_admin_body_class( $classes ) {
	global $post; global $post_type;
	$mode = '';
	$uri = $_SERVER["REQUEST_URI"];
	
	if (strstr($uri,'edit.php')) {
		$mode = ' edit-list-';
	}
	
	if (strstr($uri,'post.php')) {
		$mode = ' edit-page-';
	}
	
	$classes .= $mode . $post_type;
    
	return $classes;
}
add_filter('admin_body_class', 'POSTTYPE_to_admin_body_class');