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https://issues.apache.org/jira/browse/MYFACES-3542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13286644#comment-13286644
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Leonardo Uribe commented on MYFACES-3542:
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This is an interesting piece of code. I'll describe what I can see, I know you
already know this but I'm just trying to follow the steps.
In theory, org.apache.myfaces.renderkit.html.HtmlAjaxBehaviorRenderer look for
the components, get its clientIds, and finally pass them as params when writing
the js code related to the ajax operation.
In this case, the values passed in "javax.faces.partial.render" request
parameter, which are the same that were calculated before are just ignored, and
the values used for identify the affected client behavior, which are used in
the decode process (see
org.apache.myfaces.shared.renderkit.html.HtmlRendererUtils.decodeClientBehaviors()
), are used to calculate the affected components, but the good part is if you
use c:if to skip components from the component tree, they will not be used.
There is not any reference in the spec about this. "In theory", include it will
not cause any side effects more than solve the problem described here. The only
thing that suppose a problem is this propose a different behavior from the one
found in the RI (Mojarra), maybe not thought by the EG when the spec was built.
I don't know what to do in this case. A custom <f:ajax> component with this
behavior in mind sounds better for me than change the default behavior. Any
thoughts?
> The render attribute of AjaxBehavior should support late value expression
> evaluation
> ------------------------------------------------------------------------------------
>
> Key: MYFACES-3542
> URL: https://issues.apache.org/jira/browse/MYFACES-3542
> Project: MyFaces Core
> Issue Type: New Feature
> Reporter: Bernd Bohmann
> Attachments: late-render-expression-0.png,
> late-render-expression-1.png, late-render-expression-2.png,
> late-render-expression-3.png, late-render-expression-4.png,
> late-render-expression.tgz
>
>
> The render attribute of AjaxBehavior should evaluated during post-back after
> 'Invoke Application' and before 'Render Response'. It's easly to add this
> feature with a own PartialViewContext. But there is no call to processPartial
> with 'Invoke Application'. The Phase 'Render Response' is too late if you are
> using c:if to skip components from the component tree. See attached example
> app and pictures.
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