Delete with children error

[bananapapa]

Hi!
Thank you for yout solution. It's really good job.
But i found error when deleting item has children:

 Message: Undefined variable: table
 Filename: models/hierarchy_model.php
 Line Number: 318

 Error Number: 1102
 Incorrect database name ' ON '
 SELECT * FROM (`hierarchy`) JOIN ` ON `.`hierarchy_id` = `hierarchy`.`hierarchy_id`                          WHERE `parent_id` = '17' ORDER BY `hierarchy_order` DESC LIMIT 1
 Filename: ..../models/hierarchy_model.php
 Line Number: 847

There are no error when deleting item doesn't has children items.

[vmichnowicz]

This code is super old and looking back some of it is kinda embarrassing. Haha. Anyway, I have make a small patch which should fix this issue.