custom validator script with custom error message ?

[T S]

Hi,

I'm using a custom validator script to check if an attachment on a transition screen is given.
However, I don't know how to appropriately break up with some error message after detecting a missing attachment file.

it looks something like this:
DefaultTemporaryAttachmentsMonitorLocator loc = new DefaultTemporaryAttachmentsMonitorLocator()
TemporaryAttachmentsMonitor tam = loc.get(true)
Collection<TemporaryAttachment> tas = tam.getByIssueId(issue.getId())
if ( tas == null || tas.isEmpty() ) {
return "Error message"
}

instead of returning the error as string, I also tried to

InvalidInputException iie = new InvalidInputException("missing file attachment", "attach a file...")
throw iie

which breaks the whole script up with a null pointer exception instead of my desired error message
What do I need to do to make it work ?

Thanks in advance

[T S]

Thanks !

I looked for it but didn't find the wiki page you showed me. It will be very useful in the future.

[JamieA]

You just need to set the variable invalidInputException to an instance of InvalidInputException . Note the case in those two strings.

...

invalidInputException = new InvalidInputException("attach a file...")

If you use the two-arg format the first arg should be a field ID.

[JamieA]

Examples: https://studio.plugins.atlassian.com/wiki/display/GRV/Validators