How can we add validation for Number custom field to accept only positive integers in jira

[gadamchetty ramya]

It is possible to script filed in JIRA using script runner ?

[Grigory Salnikov · Accepted solution]

Hi!

Never used a script runner but have similar tasks. This free add-on helps me a lot:

Unique Regex Custom Field

You can restrict entered values to whatever you want.

[gadamchetty ramya]

Thank you so much 

[Grigory Salnikov]

You're welcome :)

[Nic Brough -Adaptavist-]

Yes, you can write a Behaviour that would block people entering anything smaller than 0, or write a validator that can say "if issue.getCustomFieldByName("My number") < 0 return false".  Obviously, you'll want to make that a bit more pretty with feedback and so on.

[gadamchetty ramya]

Thanks for your help.
can we add a validation for existing custom field ? Instead of creating new field through script filed .

[Nic Brough -Adaptavist-]

You don't need to validate scripted fields, because they have no way for users to enter data into them.  They contain calculated values for display only.

For a standard custom field, yes, you can do it with Behaviours or a validator script.