Struts-faces form input with rendered attribute set

[Xav DECO]

Craig, All,
I would like to discuss the issue I have entered in Bugzilla (issue #30511) 
with title “Struts-faces form input with rendered attribute set” that you 
put invalid a while ago.

I am first going to rewrite the issue and I will try to explain where I do 
not find things logical.

First of all, I use the struts-faces library, so I have Struts forms and JSF 
pages (I also use tiles).

So I have 1 Struts forms, called serverForm with 2 attributes:
   <form-bean      name="serverForm"
                   type="org.apache.struts.validator.DynaValidatorForm" >
     <form-property name="dns"          type="java.lang.String" />
     <form-property name="mtc"          type="java.lang.String" />
   </form-bean>
I also have 2 actions: one called before displaying the JSF page, and 
another one called at submission time.
These 2 actions are associated with the same form serverForm marked as 
request scope for both.
The first action populates the form attributes so as to prefill the inputs, 
it also sets the mtc attribute to ‘edit’.
The second action is used to save the data into an XML data file.

The JSF page looks like this:
<s:form action="/saveServer" onsubmit="return validateServerForm(this);">
<h:inputHidden id="mtc" value="#{serverForm.mtc}" />
...
<h:inputText id="dns" value="#{serverForm.dns}" rendered="#{serverForm.mtc 
== 'edit'}"/>
...
</s:form>

At rendering time the page is correctly displayed and the dns input displays 
if mtc is equals to ‘edit’, if the dns field has a value its value displays 
in the field.

Then if I submit the form, in my Struts action class, I can get the mtc 
value using:

DynaValidatorForm serverForm = (DynaValidatorForm) form ;
String mtc = (String)serverForm.get( "mtc" ) ;
The mtc attribute is equals to ‘edit’.
But when I try to do:
String dns = (String)serverForm.get( "dns" ) ;
I cannot obtain the dns value that was submitted even if mtc is equals to 
‘edit’.

To sum up the value of the attribute serverForm.mtc is available at 
rendering time and at submitting time but seems not present while evaluating 
the rendered JSF attribute during the form submit phase.

Then if I put the scope of both actions used as Session scope, it works 
correctly, I can get the dns submitted value.

Without knowing in details the way a request is handled behind the scene 
especially between JSF and Struts, I think there is something wrong here but 
I am not 100% sure. In fact I am pretty sure that I should not be obliged to 
set these actions in session scope.

If you need more information, please let me know.
Thanks a lot for your help
Xavier
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