Session.setFlash
Session.set($key, $value) -> null
Description
Set a one-time session value for the given $key.
This value will only persist in the session until the following request.
Flash values are often used for success and error messages after the user submits an action.
// ... process user action ...
Session.setFlash('message', 'Congratulations!')
// ... in the NEXT request only ...
// In HTML template
--- if Session.hasFlash('message') {
<div>{{ Session.getFlash('message') }}</div>
--- }
//= <div>Congratulations!</div>