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From Sifcenter <sifcen...@email.it>
Subject Binding attribute (or code) is processed also if rendered attribute is false
Date Tue, 30 Aug 2011 10:47:01 GMT
Hi all,

I am developing an JSF application but I encoutered a strange behavior while
binding one selectonemenu.


I have one request bean "foobean" and this JSF code:


&lt;h:panelGroup rendered="#{mycond}"&gt;

&lt;h:outputText value="Hi 1" /&gt;

&lt;h:selectOneMenu value="otherfoobean.property"
binding="#{foobean.foobind}" &gt;.... &lt;/h:selectOneMenu&gt;

&lt;/h:panelGroup&gt;


&lt;h:panelGroup rendered="#{mycond2}"&gt;

&lt;h:outputText value="Hi 2" /&gt;

&lt;h:selectOneMenu value="otherfoobean2.property"
binding="#{foobean.foobind}" &gt;.... &lt;/h:selectOneMenu&gt;

&lt;/h:panelGroup&gt;


when mycond is true and mycond2 is false the selectonemenu disappear because
(I think) also if mycond2 is false the binding in the second selectOneMenu
is anyway done ( I debbuged get/set methods and I saw that in the second
binding operation is called get method).


If I remove the second binding attribute, it works.


I need, to avoid duplication of request bean, to bind the same bean to
different components ( in my code is impossible two conditions are true in
the same time so at least I bind one componet at time).


Why?


I don't undestand if the rendered condition is false, why the code is anyway
processed?


I am using Myfaces 2.1.0

 
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