How to create a post function script?

[Jeff Peters]

Good day.

We are currently using Scriptrunner 3.0.16 and plan to upgrade to 4.1.3.8 or 4.2.0.5 in the coming months.

I am a non-developer/script guru looking for some guidance on creating several post function scripts to perform simple mathematical calculations with several numeric custom fields to populate another numeric field.  The following are the formulas:

(CF1 * CF2) + (CF3 * CF4) + CF5 = CF6

CF7 + CF8 + CF9 + ... + CFx = CFn

(CF20 / CF21)  * 100 = CF22

Many thanks for your assistance.

[Thanos Batagiannis _Adaptavist_]

Hi Jeff,

Here is a script example (as a custom script post function) that add the values of two custom fields, add put the sum as a value of a third custom field.

import com.atlassian.jira.issue.Issue
import com.atlassian.jira.issue.ModifiedValue
import com.atlassian.jira.issue.util.DefaultIssueChangeHolder
import com.atlassian.jira.component.ComponentAccessor

Issue issue = issue;
def customFieldManager = ComponentAccessor.getCustomFieldManager()
def tgtField3 = customFieldManager.getCustomFieldObjects(issue).find {it.name == "sumNumber"}
def tgtField1 = customFieldManager.getCustomFieldObjects(issue).find {it.name == "number1"}
def tgtField2 = customFieldManager.getCustomFieldObjects(issue).find {it.name == "number2"}

def number1 = issue.getCustomFieldValue(tgtField1)
def number2 = issue.getCustomFieldValue(tgtField2)


def changeHolder = new DefaultIssueChangeHolder()
tgtField3.updateValue(null, issue, new ModifiedValue(issue.getCustomFieldValue(tgtField3), number1 + number2),changeHolder)

I do not know your requirements but, if I may, you can also have a look at scripted fields. May fit better in your case.

Kind regards