I'm trying to use an actionButton in a Flexdashboard to submit a text string for processing and analysis. If I remove the button I'm able to send the contents of my textInput box dynamically, but I need it to wait until the full string has been entered. I've added the actionButton and an observeEvent in the target row to watch for the button to be clicked but as far as I can tell, nothing happens when I click on it.
Is there some additional setup that I need to do to enable this to work, or does actionButton and observeEvent not work in Flexdashboard?
See gist here for code example.