I'm proficient in PHP but novice in Drupal. I have Actions, Triggers and Workflow setup. From what I've read I need to create a function to implement hook_action_info() and a callback function which calls menu_link_delete. Does anybody know what I'm talking about and can anybody tell me how to do this?
To be precise when a Workflow transition is triggered on a particular Node (called Exhibition) I want an Action that removes any reference to the Node from the Primary Navigation menu.