Strange behaviour of selectOneMenu

[Melloware]

Sounds like your validator is somehow munging it? Like the validator is failing and thus the old value remains.

[Marco Sulla]

But a validator should NOT act like this.... this is the ONLY validator that does not works. The code is wrong?

[Melloware]

I would assume since if you remove the validator the code works fine. So it sounds like the bug is somewhere in this validator.

[Melloware]

Also did you see the answer on StackOverflow: https://stackoverflow.com/questions/684 ... -not-rende

I was going to suggest the same thing I don't know why you even need this validator?

[Marco Sulla]

The answer does not work, I'll write there why.

Why I need a Validator? Well, why you need int?
I need a Validator because I want to be sure that the user has done a choice in a SelectOneMenu, and I can't find a way to do it. It's the scope of validators, check if the value of an input is correct.

[Melloware]

Why not just use required="true" and requiredMessage="A value is required" or whatever you want it to say?

[Marco Sulla]

Because I have to repeat `requiredMessage="A value is required"` for every input. But what if the message changes? This is against the One Source of Truth.

Is there not a way to change the message globally by default?

[Melloware]

Yep i believe you can configure that with a JSF Message Bundle property globally.

[Marco Sulla]

Ok, this is my solution:

https://stackoverflow.com/a/68483393/1763602

but the problem is that, if I select an option and then back the noSelectionOption, the wrapper does NOT update.