Workaround to get a custom field value in a post function before issue is created

[Alexandra Steinberg]

Does anyone know how to retrieve the value of a custom field (String) in a custom script post function before the issue is actually created?

I am trying to add request participants based on the value of the custom field.

When I create a ticket with the LOB custom field value as CIO, it should add "alexandra" and "Service_Desk_Testing" as request participants.

However, when I created a ticket, it added "Service_Desk_Testing" and "Service_Desk_Testing2" as participants meaning it's not properly matching the value of the CIO field.

Does anyone know how I could retrieve the custom field value of the LOB field?

Thanks!

Here's what I have so far. 

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.user.ApplicationUser
import java.util.ArrayList
import com.atlassian.jira.issue.ModifiedValue
import com.atlassian.jira.issue.util.DefaultIssueChangeHolder
import com.atlassian.jira.issue.MutableIssue
import com.atlassian.jira.issue.IssueManager
import com.atlassian.jira.issue.index.IssueIndexManager
def customFieldManager = ComponentAccessor.getCustomFieldManager()
def userManager = ComponentAccessor.getUserUtil()
def requestParticipantsField = customFieldManager.getCustomFieldObject("customfield_10001")
def lobField = customFieldManager.getCustomFieldObject("customfield_12345")
def issueManager = ComponentAccessor.getIssueManager()
def loggedInUser = ComponentAccessor.getJiraAuthenticationContext().getLoggedInUser()
def getUsersAsArray = {
def users = ["Service_Desk_Testing"]
def lob = issue.getCustomFieldValue(lobField)
ArrayList<ApplicationUser> userList = new ArrayList<ApplicationUser>()
ArrayList<String> lobUserNames = new ArrayList<String>()

if (lob == 'CIO')
{ lobUserNames.add("alexandra") }
else {lobUserNames.add("Service_Desk_Testing2")}

lobUserNames.each {
def lobuser = userManager.getUserByName(it)
if (lobuser)
{ userList.add(lobuser)}
}//lobUserNames.each

users.each {
def user = userManager.getUserByName(it)
if(user)
{ userList.add(user) }
}//users.each

return userList
}//getUsersAsArray
MutableIssue myIssue = issue
ArrayList<ApplicationUser> applicationUsers = getUsersAsArray()
myIssue.setCustomFieldValue(requestParticipantsField, applicationUsers)

[PD Sheehan · Accepted solution]

HTTPBuilder already takes care of the Json parsing for you since you specified ContentType.JSON. You should not need JsonSlurper here.

But like you said, if the API is giving you a single item, then you can get the id for that item like this:

_userId = json[0].id