RackTables/racktables-contribs — pull request #11 by nvtkaszpir (2014-03-08 23:54:50+00:00)
Title: Update nagios.php

Based on http://www.mogilowski.net/lang/en-us/projects/racktables/ original descrition to use custom attribute. Original code lacks this feature.
I've decided to add simple check if the given attribute exists and is not empty - then it is used to call Nagios.