How can use validator, before create transition

[Venkatesh Bhureddy]

How can use validator, before create transition? please let me know.

[Leonard Chew · Accepted solution]

What Thorsten suggested, you can also do that with scriptrunner, you'll need to script the condition however.

I have tested it and it works:

Scripted Validator Condition:

Error Message on Screen when you have a summary that already exists (e.g. what the script checks):

[Venkatesh Bhureddy]

@Leonard Chew

This is working Thanks Chew.

[Leonard Chew]

@Venkatesh Bhureddy , good job!

Just out of curiosity: You were able to get the "getIssuesByJQL()" function to work? Thats a custom function I wrote for more convenience, as I often use jql results in my scripts. 

[Thorsten Letschert _Decadis AG_]

Hi @Venkatesh Bhureddy ,

as mentioned before this isn't possible out of the box. However, if using an additional app is a valid option for you, you might want to have a look at Jira Workflow Toolbox. 

It allows you to validate against a JQL query to check if specific tickets already exist (see https://apps.decadis.net/display/JWT/Condition+and+validation+based+on+JQL+query). In your scenario, you would have to check for the custom field value.

Disclaimer: I belong to the team behind the aforementioned app.

Cheers
Thorsten

[Jack Brickey]

You cannot. Validators are associated with a transition. Depending on your goal you might consider an automation or scripting addon. Maybe if you describe your requirement we could provide a solution.

[Nic Brough -Adaptavist-]

Validators, by definition, happen after someone has tried to make a change.  They are there for checking input!

What you are looking for is more of a "condition", which is "can this be done?  If not, don't even let the process start".  When you're creating an issue, you can't do this - you don't have enough information in the workflow process. So there's nowhere to put a condition on create.

Jira does the condition before the workflow, and all it does is check the permission that a person has the right to create issues in that project.

[Venkatesh Bhureddy]

Hi @Jack Brickey ,

I am trying to add validator before transition, the main purpose we can stop create issue.

 I need help trying to find a way of stopping an issue being created if there is an open issue with a custom field value selected

Example: 

Issue 1 is Open and Custom Field = 123

User tries to create Issue 2 and populates Custom Field with '123'. I want the creation to be stoppped with maybe an error message? and dont get created

[Jack Brickey]

This cannot be done thru a Validator as it only works on the transition and only assessing the current issue not looking a existing issues.

I’m unsure how to achieve this or if it is even possible. For sure you would require an addon. You might look at Scriptrunner, powerscripts, etc.