GlideSystem

The GlideSystem server-side API is available to all server-side scripts via the variable gs. This API allows us to get various kinds of useful information about the system, the user's session, the current date/time, or other bits of useful info. It also allows you to interact with the user, by displaying informational or error messages.

addErrorMessage() and addInfoMessage()

The addErrorMessage() method will display a red error message at the top of the user's browser window on the next page they load after the server-side script that calls this method runs. This same functionality can also be achieved from a client-script, using the g_form API (g_form.addErrorMessage()).

addInfoMessage() has the same effect, but instead displays a blue informational message as opposed to a red error message.

Example usage

The following script could run inside of a business rule, and show a message indicating whether the operation was allowed or not:

if (current.active.changesFrom(false)) { 
    if...