Hi Robert, There is no need to persist the injected page. Your original version should work OK. What exactly the NPE says?
Also, as a comment, "back to version 4" is not entirely correct. As a matter of fact, Tapestry 4 and Tapestry 5 seem to be two different frameworks with their own merits (IMHO). Cheers, Alexander -----Original Message----- From: Robert A. Decker [mailto:[EMAIL PROTECTED] Sent: 20 September 2007 04:08 To: users@tapestry.apache.org Subject: [T5] tutorial question I'm teaching myself Tapestry by jumping right into version 5. I'm a pretty experienced developer and so I'm not ready to give up and go back to version 4, but I am having what is probably a very basic problem... I'm trying to do the Tapestry 5 tutorial and I'm on the section where we count the number of guesses on Guess page page: http://tapestry.apache.org/tapestry5/tutorial1/hilo.html The tutorial doesn't fully cover what should be in Guess.java This method: Object onActionFromLink(int guess) { _count++; if (guess == _target) { _gameOver.setup(_count); return _gameOver; } if (guess < _target) _message = String.format("%d is too low.", guess); else _message = String.format("%d is too high.", guess); return null; } GameOver is another page in the app. Not knowing exactly what I should do, I have declared as a variable in Guess.java: @InjectPage GameOver _gameOver; However, this is leading to a NullPointerException, which kind of makes sense because GameOver isn't persisted. So, I tried: @InjectPage @Persist GameOver _gameOver But that doesn't fix the problem, and documentation I found in Tapestry 4 seems to say that you can't declare multiple injection tags per variable. Does anyone have a working Tapestry 5 tutorial? Or can help me with this specific problem? I've also tried something like: GameOver _gameOver = new GameOver(); _gameOver.setup(_count); return _gameOver; (the WebObjects way) but that leads to an even weirder exception... Thanks, Robert A. Decker --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] ------------------------------------------------------------------------------ CONFIDENTIALITY NOTICE: If you have received this email in error, please immediately notify the sender by e-mail at the address shown. This email transmission may contain confidential information. This information is intended only for the use of the individual(s) or entity to whom it is intended even if addressed incorrectly. Please delete it from your files if you are not the intended recipient. Thank you for your compliance. Copyright 2007 CIGNA ============================================================================== --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
