Agile development Story dependency & prerequisite

[Claudia Der]

I have two agile stories and one of them is a prerequisite to the other. I need to avoid starting to work with the prerequisite story until the first one is completed. For that reason, I would like to do something to nobody changing the state story to work in progress when it has a prerequisite story not completed.

Is there any business rule or UI action that can manage this condition?

Best regards,

Claudia

[James-B]

This attached BR should help you.

It will abort the action and display an error message saying there are active prereqs.

(function executeRule(current, previous /*null when async*/) {

	var id = current.getUniqueValue();
	var verify = false;
	var prq = new GlideRecord('m2m_story_dependencies');
	prq.addQuery('dependent_story.sys_id', id);
	prq.addQuery('prerequisite_story.state','!=', '3');
	prq.query();
	
	if (prq.next()){
		verify = true;
	}		
	
	if (verify === true){
		gs.addErrorMessage('This story has an active prerequisite story.');		
		current.setAbortAction(true);
	}

})(current, previous);

Please mark my answer as correct if this resolved your issue. 

[James-B · Accepted solution]

There are quite a few ways to skin this cat by the way but I like this one because it allows the user to try and prompts them that there is an issue they need to resolve before they can perform the action.