CONNER, BRENDAN (SBCSI) wrote the following on 9/9/2005 5:03 PM:
I think the key here is that the rendered condition is checked *after* the button has been clicked, and, if you haven't saved the state of the bean that contains the boolean value, it will get re-initialized with null values (and false values) when it is referenced and the decision is made to create the action button component.
Yes. Agreed that is what is happening. I'm curious, however, to learn *why* this is the behavior (checking the rendered condition after the click) for actions on buttons. The recommended way to decide whether to display a button or not seems to be to use the 'rendered' condition, yet now you also have to remember to save the state.
I have a serious question, if you didn't have MyFaces "saveState" how in the world would one deal with this? I wouldn't want to be forced to give my whole backing bean session scope just to be able to hide or show a button on a form based on some condition.
I'll have to add this to the wiki. I'm sure someone else is going to get burned on this 'rendered' behavior.
Thanks for all your help (and patience:) Mike and Brendan. You've kept me somewhat sane throughout this learning process.
-- Rick
