I'd like to capture the project key when an issue is created in a custom field called "Original Project Key". Having this is useful for us if/when the issue is moved to another project. Is there a way to do it with a post function script? And, recording they key rather than the project name is preferable for brevity sake.
You can try using the "Copy Value From Field" post function in JIRA Suite utilities plugin. Source field will be "Key" and destination field can be a text custom field. Haven't tried it myself but seems that will work.
Well, I'm currently looking at https://jamieechlin.atlassian.net/wiki/display/GRV/Post+Functions#PostFunctions-Copyonefieldtoanotherusingregexp as an example, becuase what I want is the project key (before the dash of the issue key,) but haven't got that approach working yet. I'm I over complicating it?
Jamie's script runner is what I would go for so I guess you hit the spot. I guess you have to do dome scripting since you're looking for a substring. Other than that you could have a look at this plugin :
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