Scriptrunner behavior - Get insight object value (String) from custom field via groovy

[Marcel Kroner]

How can i get the value of a insight custom field using Scriptrunner behavior, and write this fields value into the summary field?

Environment: Datacenter

This is my custom field inside service portal:

And i want to get the value of the "Use old Project to pre-fill fields" field. This value should be written inside the "Summary" field. 

However, every approach which I have found online and tested, unfortunately does not want to work.

This is my code: 

1. Attempt

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.CustomFieldManager
import com.atlassian.jira.issue.MutableIssue;
import com.atlassian.jira.issue.fields.CustomField


def summary = getFieldById("summary")
def useProjectToFill = getFieldById("Use old Project to pre-fill fields")
String selectedProj = useProjectToFill.getFormValue().toString()

if (summary.getFormValue() == null || summary.getFormValue().toString().length() < 1) {
    summary.setFormValue("nothing selected")
} else {
    summary.setFormValue(selectedProj)
}

Result:

Nothing selected so far so okay ->

Project select ... Not so okay... ->

2. Attempt

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.CustomFieldManager
import com.atlassian.jira.issue.MutableIssue;
import com.atlassian.jira.issue.fields.CustomField

def field = ComponentAccessor.getCustomFieldManager().getCustomFieldObject("Use old Project to pre-fill fields")
def value = underlyingIssue.getCustomFieldValue(field)


def summary = getFieldById("summary")
String useProjectToFill = getFieldById("Use old Project to pre-fill fields").getFormValue().toString();

if (summary.getFormValue() == null) {
    summary.setFormValue("nothing selected")
} else {
    summary.setFormValue(useProjectToFill)
}

This attempt breaks the behavior and summary is empty all time.

Pls help

[Dirk Ronsmans · Accepted solution]

Hey @Marcel Kroner and welcome to the community!

I'm wondering if this is causing you issues:

getFieldById("Use old Project to pre-fill fields")

you use the getFieldById but then use the name of the field.

Could you try with either getFieldByname("") or input the customfield_xxxx ?

[Marcel Kroner]

Hello Dirk,

thank you very much! I never thought I would get such a quick response as I got from you :)! Thank you very much! 

Your answer is partially correct.

getFieldByName("") returned me the insight object, but not the string inside the field.

I can work with it, but people looking for the string value would not be helped by it, I think.