[rt-users] need to run code when user presses a button

[Al Joslin]

I would like to have a button on the display page of a ticket that when clicked 
runs some code (*) which then causes the display page to refresh

I have the code (*) written which queries a remote database and updates an rt 
ticket based on what it finds 
        - this is all perl code, using DBI to connect the external db

I don’t care if the code is stored in RT or not

How can I do this?

I can create a button on the Ticket display page which submits a form to an 
url, perhaps I should return the result as a redirect back to the Ticket 
display page ?

thanks
al;