On transition to InProgress, subtasks of this issue should be assigned to 'xyz' user. How to do that?

[Shagufta Gurmukhdas]

Through groovy script  on an issue, how to write code to set assignees for the subtasks of the issue? I tried getting the subtask objects and iterating through each one of them and setting the assignee id, but i get the error that '"cannot set read-only property: AssigneeId". How should I go about this?

[Vasiliy Zverev · Accepted solution]

Issue class is just represents issue. All methods to modify it are into MutableIssue. Issue.getSubTaskObjects() return collection of Issue objects. Since it is requered to transform it into MutableIssue ones. I usually do it like this:

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.Issue
import com.atlassian.jira.issue.IssueManager
import com.atlassian.jira.issue.MutableIssue

MutableIssue mutableIssue;
IssueManager issueManager = ComponentAccessor.getIssueManager();

for(Issue subtask: issue.getSubTaskObjects()){
    mutableIssue = issueManager.getIssueObject(subtask.getId())
    mutableIssue.setAssigneeId("")
    //
}

[Shagufta Gurmukhdas]

@Vasiliy Zverev but this doesnt change the assignee id of the subtask issue. It just sets it for the mutable issue object we created. right?

[Shagufta Gurmukhdas]

Okay I just ran an updateissue() and it worked! Thanks a lot!!!!