Function execution for each login

usr338

Is it possible to run a back-end function any time user logged in to application? I think it is a good place to init and configure application data according to logged in user.

gabriel

Usually, this is what collections are for. They are fetched on login to initalize data in the frontend that the user might need to work.

I think your request is probably related to your other thread. Updating relation data to affect session based user state in the frontend is very complicated and error-prone. I would suggest trying out variables to see if they address your requirement.

usr338

gabriel thanks for response.
I think handling events like user logded in or logged out can be usefull in other senarios too. (and may be events like form opened or closed)

ACCFreiburg

+1
Initializing variables and other stuff would also be very helpful.

gabriel

I´ll add it to the list. I´ve not needed it myself, but I can see the use case for frontend function execution on app start.

Execution of functions on logout would be more tricky and might raise expectations that these functions are executed when a user leaves the application. Unfortunately we cannot guarantee this as it would be reliant on how the application is being left.

usr338

gabriel as you said running front end function at logout may cause exception because it runs async. so it seems that such a function should run synchronously in exist process of application.
actually I think running back end function during application start also has its usage.
may be adding option "run on each login" or "run on each application start" in scheduler be simplest solution for these cases.