Passing parameters between xhtml and beans

[giant2]

Hi! I have a problem passing parameter between xhtml file and beans.

An xhtml file has a component declared (for simplicity we call it "PIPPO") and in another xhtml file I use PIPPO:

...

<mytag:PIPPO>

     <ui:param name="pluto" value="main" />

</mytag:PIPPO>

...

PIPPO component is like this:

...

<h:outputText value="Here we are: #{pluto}" />

...

<... rendered="myBean.render('#{pluto}')"...>

...

and the method is:

public boolean render(String whoAreYou){

     System.out.println("calling render by:"+whoAreYou);

     return true;

}

I see in the debug console all the traces are like:

calling render by:#{pluto}

but I was waiting there'll be: calling render by:main

I believe the problem was the calling of method, so I tryed to use myBean.render(#{pluto})

but it doesn't go and have a compilation error.

HELP please! How can I passing the parameter value?!?!?!?!?!?

[zeeman]

First call your back-end bean with a hard-coded string myBean.render('#{'pluto'}')" to assure the back-end works. Once that works, try to use the page param so you can isolate the problem.

I pass params among pages using <ui:param name="someName" value="#{value}" />

That works for me. Seems like your PIPPO component is culprit.

[giant2]

Thanks for the answer, but I did it and see the back-end is called with the string #{pluto} and not, as I expecting, the string main.

It seems the translation from #{pluto} to its value isn't done in calling method because I try to outputText this #{pluto} and see correctly the string "main".

It could be a bug or a different behaviour of the engine?

I hope in the engine so maybe there is some pattern/regular expression to use doing what I need, isn't it?

[giant2]

I solved!

Using a parameter retrieved like the mine #{pluto} in a method call, it's not necessary to specify the syntax #{pluto}.

I explain me better:

my #{pluto} and the calling method <... rendered="myBean.render('#{pluto}')"...>

in this scenario it must be:

<... rendered="myBean.render(pluto)"...>

because the context in witch pluto is called is a method and not the page.

Thanks to zeeman. Your suggestion myBean.render('#{'pluto'}')" with too many ' put me in the correct way.