How to Set current assignee to "Unassigned" whenever group picker field is changed?

[CMCSS Programmers]

I have a group picker field called "Assigned Team." Whenever someone changes the group in the group picker to any group, how can I automatically set the Assignee back to "Unassigned"? Not sure how to do this in either a Behaviour or Script Listener? Thank you.

[Chris C]

Try this using a IssueInputParameters object.

import org.apache.log4j.Logger
import org.apache.log4j.Level

import com.atlassian.jira.bc.issue.IssueService
import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.link.IssueLinkTypeManager
import com.atlassian.jira.issue.IssueInputParameters
import com.atlassian.jira.issue.IssueManager
import com.atlassian.jira.issue.Issue

IssueService issueService = ComponentAccessor.getComponent(IssueService);
def user = ComponentAccessor.getJiraAuthenticationContext().loggedInUser

IssueInputParameters issueInputParameters = issueService.newIssueInputParameters()
issueInputParameters.setAssigneeId(null)

def update = issueService.validateUpdate(user, issue.id, issueInputParameters)

log.debug "${issueInputParameters}"

if (update.isValid()) {
          issueService.update(user, update)
} else {
         log.debug("issue parameters are not valid: ${update}")
}

[Kumar]

Hi @CMCSS Programmers @Chris C @Jason Huntowski @Ron Gates

For me also have same requirement i have group field called "Assignment Group" 

when ever the group field changes the assignee field have to change to "Unassigned" 

I have tried above scripts it did not worked for me I have added those scripts in "Script Listener" Custom Event "Issue Update" 

Can you please help me here how you guys achieved this

Thanks,

Kumar

[Ron Gates]

You can go with Custom Listener and configure it to trigger on "Issue Update" event (or any events combination of your choosing):

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.CustomFieldManager

def currentIssue = event.issue;
def customFieldManager = ComponentAccessor.getCustomFieldManager();
def groupField = customFieldManager.getCustomFieldObjectByName('Group Field');
def groupFieldValue = currentIssue.getCustomFieldValue(groupField);

if (groupFieldValue != null) {
 currentIssue.setAssignee(null);
}

Note that ScriptRunner inline script syntax checker can see an error in the line that sets assignee but script will work fine without errors.

[Jason Huntowski]

Hey Ron,

I have a similar need but your response is not working. I pasted my code below. My situation is that I am using a global listener to clear the assignee field if a custom field changes. I know my change code works, cause I use it for changing priority based on the change. But I can't get the assignee to null out.

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.CustomFieldManager

def change = event?.getChangeLog()?.getRelated("ChildChangeItem").find {it.field == "Assignment Group"}

def currentIssue = event.issue;

if(change)
{
 currentIssue.setAssigneeId(null);
 return true
}
else return false

 any help you could give would be much appreciated.

Thanks,

Jason