I would like to use a backend list with a button in the taskbar that does something with the checked items. I have found how to get these items together with the ajax call on the same route, but I would like to use the checked items on a different url. How do I pass the checked items to the new url?

More concrete: I have a list of users, displayed by the controller under crtl/index, I want to check a few of them, and then write them all a message on a new page on ctrl/message. In ctrl/message, I need the checked items, how do I get them?

Thank you all for some help!

OK, rtfm, Session::