Copy value from user picker custom field to Watchers filed on custom field update

Nadica Gaber

We have a request to copy values from two user picker fields to the Watcher filed whenever these fleds are updated. I have created a script listener which runs on issue update:

import com.atlassian.jira.issue.Issue
import com.atlassian.jira.issue.ModifiedValue
import com.atlassian.jira.issue.util.DefaultIssueChangeHolder
import com.atlassian.jira.component.ComponentAccessor

def issue = event.issue as Issue
def customFieldManager = ComponentAccessor.getCustomFieldManager()
def sourceField = customFieldManager.getCustomFieldObjects(event.issue).find {it.name == "Technical Lead"}
def tgtField = customFieldManager.getCustomFieldObjects(event.issue).find {it.name == "Watchers"}
def changeHolder = new DefaultIssueChangeHolder()
tgtField.updateValue(null, issue, new ModifiedValue(issue.getCustomFieldValue(tgtField), issue.getCustomFieldValue(sourceField)),changeHolder)

 

But this does not update the watcher filed. We get the following error:

 

2017-12-13 10:21:39,209 ERROR [runner.AbstractScriptListener]: *************************************************************************************
2017-12-13 10:21:39,209 ERROR [runner.AbstractScriptListener]: Script function failed on event: com.atlassian.jira.event.issue.IssueEvent, file: <inline script>
java.lang.NullPointerException
	at com.atlassian.jira.issue.IssueImpl.getCustomFieldValue(IssueImpl.java:896)
	at com.atlassian.jira.issue.Issue$getCustomFieldValue$9.call(Unknown Source)
	at Script48.run(Script48.groovy:11

I guess that the method for get and set Watchers filed is not correct. Can you please help us with that?

 

Regards,

Nadica

Ivan Tovbin

Hi Nadica,

Indeed, the way you are trying to set the value for 'Watchers' field seems to be the problem here.

Assuming 'issue.getCustomFieldValue(sourceField)' returns an 'Application User' object, try this:

def watcherManager = ComponentAccessor.getWatcherManager()

watcherManager.startWatching(issue.getCustomFieldValue(sourceField), issue)