Not able to fetch parent object in scriptrunner post function

[Alaguraja]

Hi,

I need to fetch parent custom field value to compare with sub-task field value . To achieve that I was writing below code in sub task post function but no luck in getting parent issue . Getting null for below tried option . Kindly help to fix the issue in the code.

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.IssueManager;
import com.atlassian.jira.issue.Issue
import com.atlassian.jira.issue.CustomFieldManager;

Issue parentIssue = issue.getParentObject()
log.error("parentIssue = "+parentIssue) -->getting null

def parentId = issue.getParentId();
log.error("parentId = "+parentId) -->getting null

def parent = ComponentAccessor.getIssueManager().getIssueObject(parentId)

log.error("parent = "+parent) -->getting null

def myfieldName = ComponentAccessor.customFieldManager.getCustomFieldObjectsByName("myfield").first()
log.error("myfield = "+myfieldName)

def parentValue = parentIssue.getCustomFieldValue(myfieldName )
log.error("parentValue = "+parentValue) 

def parentValue11 = parent.getCustomFieldValue(myfieldName )
log.error("parentValue11 = "+parentValue11)

def Mounts = customFieldManager.getCustomFieldObject("customfield_20610")

log.error("Mounts = "+Mounts.getValue(issue))

[Nic Brough _Adaptavist_]

.getParentObject() will return null if the current issue is not a sub-task, but it mght also be that it can't render the object directly as plain text in your error message.  Try  issue.getParentObject().getKey() for the issue key in plain text.

[Suvidhaa M S]

Hi @Nic Brough _Adaptavist_ 

Yes. It is not a sub-task, it is a linked issue. Could you please tell us how to retrieve the custom field value from linked issue and compare that value against the custom field value in current issue?

For example.,

Issue A - field AA

Issue B - field BB

Issue A is linked to Issue B. I want to compare field AA and field BB. Kindly help us in providing the code for the same