[solution] Call to a member function get_permalink() on a non-object

Hello WordPress fans!
I ran across a solution to a problem, and will share it here. Feel free to reply with correction and improvements if the solution is less than optimal….

I needed to fetch a gallery in an ajax-call. Basically I tried to do something like this:
$somevar = do_shortcode('[nggallery id=something]');
…. so I could pass the gallery html back to the script.
This produced a fatal php error, Call to a member function get_permalink() on a non-object .

After googling and researching, I figured out how to avoid core file editing.
Just include a few lines of code above your do_shortcode(), a-like so:

<?php #### PHP CODE START ####
include($_SERVER['DOCUMENT_ROOT'].'/wp-content/plugins/nextgen-gallery/lib/rewrite.php');
global $nggRewrite;
$nggRewrite = new nggRewrite();
//Now you can safely do the do_shortcode!
$somevar = do_shortcode('[nggallery id=something]');
#### PHP CODE END #### ?>

https://www.ads-software.com/extend/plugins/nextgen-gallery/