Skip required validation and invoke the application

Question

I asked my question here but I think it lacks some obvious information. Hence I\'m posting my question again.

I have a JSF form which has some required validation o

Answer 1

Just put that condition straight in the required attribute.

<h:inputText ... required="#{someCondition}" />

It namely just accepts any EL expression like as many other attributes. Many starters think that you can only hardcode a "true" or "false" string in it. This is untrue.

For example, when you want to let it evaluate true only when the save button is actually pressed:

<h:inputText ... required="#{not empty param[save.clientId]}" />
...
<h:commandButton value="Cancel" ... />
<h:commandButton binding="#{save}" value="Save" ... />

(note: code is complete as-is, you do not need to bind it to a bean property)

This way the required attribute only evaluates true when the save button is pressed and it evaluates false for any other button or ajax event listener.