Using a “Please select” f:selectItem with null/empty value inside a p:selectOneMenu

Question

I\'m populating a from database as follows.

Answer 1

• If you want to avoid null values for your select component, the most elegant way is to use the noSelectionOption.

When noSelectionOption="true", the converter will not even try to process the value.

Plus, when you combine that with you will get a validation error, when user tries to select that option.

One final touch, you can use the itemDisabled attribute to make it clear to the user that he can't use this option.

• Now if you do want to be able to set a null value, you can 'cheat' the converter to return a null value, by using

More reading here, here, or here