Add callbacks for Shiny session events
onFlush(fun, once = TRUE, session = getDefaultReactiveDomain()) onFlushed(fun, once = TRUE, session = getDefaultReactiveDomain()) onSessionEnded(fun, session = getDefaultReactiveDomain())
|fun||A callback function.|
|once||Should the function be run once, and then cleared, or should it
re-run each time the event occurs. (Only for
|session||A shiny session object.|
These functions are for registering callbacks on Shiny session events.
onFlush registers a function that will be called before Shiny flushes
the reactive system.
onFlushed registers a function that will be
called after Shiny flushes the reactive system.
registers a function to be called after the client has disconnected.
These functions should be called within the application's server function.
All of these functions return a function which can be called with no arguments to cancel the registration.
onStop() for registering callbacks that will be
invoked when the application exits, or when a session ends.