Rendering/Disabling/Enabling components based on other compo

[trouby]

Hey,

What is the easiest way to control components attributes (such as rendering/disable/enable/etc...) based on other components?

for example, I want to render an input field only if a checkbox was selected,

of course with ajax support :-)



(Is it possible to be done only on the view side without java code?)



Many thanks,

Asaf.

[trouby]

Hey,

Well I guess this can easily achieved by using the 'support' tag of RF,


The problem is that if components affects others in a big form will only work if the form is correctly validated, otherwise JSF bypass the update model phase,

And immediate=true bypass update model phase too,


So in big forms where the form is not yet filled up, how can I skip validation but still update model phase?

Myfaces has subForms which I think can help here,
Is there any way to achieve this with RF?


Thanks,

Asaf.

[fabmars]

Question 1)
Yes, this is pretty common in JSF. Just use some managed beans to set your submitted values and some EL expressions to provide a test in any rendered attibute you want. Use that with some A4J support tags and you're good.

Question 2)
Use the ajaxSingle attribute of most A4J/RichFaces components. You will bypass the whole form submission and perform only a partial submit, BUT you will pass thru the validation (only of what you're submitting) anyway.

My advice is you check the online RF demo with galore souce examples.

[trouby]

Yap,

'ajaxSingle' looks good for me (missed it somehow),


Thanks FAbmars,


Asaf.

[sergeysmirnov]

"trouby" wrote:

Myfaces has subForms which I think can help here,
Is there any way to achieve this with RF?

a4j:region is an analog for subform when we speak about the ajax request. It allows to process only the form element inside the a4j:region and ignore the outer data.

ajaxSingle does the same, but for one particular form element.

[valatharv]

Hi,

I this is best place you can help, please suggest me on the following..

I have form field (h:inputText) which is disabled when the page loads.

Is there nice way just to enable h:inputText when user clicks "Edit This" link(it can be button also).

I don't want to use Javascript.........

<s:link value="Edit This" id="edit">

<s:decorate template="layout/edit.xhtml">
<h:inputText id="name" required="true" value="Test enable" disabled="true"/>
</s:decorate>