Adding lines breaks to Scriptrunner Custom script validator InvalidInputException

[Davin Studer]

I've got a Custom script validator that is testing multiple fields prior to transitioning the issue. If a field fails validation I append error text to a string that I throw as a InvalidInputException if the string is not empty. However, the error that the users sees does not have line breaks. All the error messages are just lumped together. Is there a way to do this, or maybe I'm just doing this wrong? Thanks.

def errorText = "";

if(a != b) {
    errorText += 'A did not equal B.\n';
}

if(C != D) {
    errorText += 'D did not equal C.\n';
}

if (errorText != "") {
    throw new InvalidInputException(errorText)
}

[Tim Chen]

I found the api: https://javadoc.io/doc/com.trunkplatform.opensymphony/osworkflow/latest/com/opensymphony/workflow/InvalidInputException.html 

And the following sample code is worked for me

invalidInputException = new InvalidInputException('1st error message.')
invalidInputException.addError '2nd error message.'
invalidInputException.addError 'Other messages.'
return invalidInputException

I'm using Jira 8.13.1 and ScriptRunner 6.14.0

[Davin Studer]

This isn't pretty, but this how I've gotten around it for now. I'm open to better solutions.

I added this to the system level announcement banner.

<style type="text/css">
    div[id^="workflow-transition-"] .aui-message.error p:nth-of-type(1) {white-space: pre;}
</stye>