bug in Dynamic Selects Richfaces 4

[wish79]

Hello Professionals,

i have the case which is the population of one select is depend on the other select so when i select a value from the first select the second one is rendered and display the populated data.

i used the example in the Richfaces 4 demo :

http://richfaces-showcase.appspot.com/richfaces/component-sample.jsf?demo=ajax&sample=selectsUpdates&skin=blueSky

i want the second list to be always displayed so I removed the rendered attribute from the second select .

and i add a <a4j:commandbutton value="Press Button" action="Hello">

the Bug is :

when i select any data from the second select and then press on the button i have the following error message in the screen :

the ssss is the id for the second list .

Note : i did not change any code from the demo just remove the renderd attribute from the second select .(you can take the code from the demo)

IT works if :

1- i add the condition on the rendered attribute and change it to true or false as the demo did.

2- convert the bean scope to the session.

but my case want the second select always rendered and my bean is request .

please advice.

Regards

Wish79

[iabughosh]

Dear Weshah,

I tried to do what you did but everything is ok, please post your xhtml file and try using a4j:log to see what is happening.

regards.

[wish79]

Hello Ibrahim,

you can take the code from the demo .

And there is another problem in the demo code try to get the value for the second list it will be empty in the backingBean.

try it then inform me.

Regards

wish79

[ilya_shaikovsky]

It can't be request scope.  You want to manage second select options dynamically. So you creating new list in action and passing to client. But on next request - bean is recreated and do not contains that list again. So value really can't be validated succesfully. use @view or @session scope.

Not a bug of RF but really how it should works in JSF

[wish79]

Thanks iiya,

  thats mean i have to change the scope for my backing and i have to manage the data if it was session & view (rest the value).

Ibrahim , how it works with you if you are use the request scope.

[iabughosh]

my reply which was about that everything is ok was responded to your first reply, about the second reply it is just Ilya said, the value is null when i change the scope it works.

[wish79]

as I said at the beginning I have to change the scope , Thanks for All.