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From Jacob Hookom <ja...@hookom.net>
Subject Re: Convertes for components in h:dataTable
Date Fri, 07 Apr 2006 03:18:55 GMT
Yep:

https://facelets.dev.java.net/nonav/docs/dev/docbook.html#dev-meta-converter



Konstantin Shaposhnikov wrote:
> Hello,
>
> I am developing web application using facelets and have problem, that
> I do not the best way to solve.
>
> Consider following example:
>
> I have managed bean registered under name "locales" of following class:
> Locales {
>   Locale[] getLocales() {
>     // return array of some locales
>   }
> }
>
> And have following code in template:
>
> <h:dataTable value="#{locales.locales}" var="locale">
>   <h:column>
>     <h:outputText value="#{locale}">
>     <h:outputText value="#{currentDate}">
>       <f:convertDateTime locale="#{locale}" dateStyle="long"/>
>     </h:outputText>
>   </h:column>
> </h:dataTable>
>
> But it just doesn't work neither in JSP nor in facelets. In JSP date
> is always displayed formatted in current locale, in facelets exception
> is thrown that locale can not be null.
>
> If I understand JSF component model right there is only one
> h:outputText component is available in the tree and it can't have
> different converters every time it is rendered by t:dataTable.
> Facelets version that uses c:forEach instead of h:dataTable works
> perfectly, because it creates several components in JSF tree.
>
> Now I see only one solution for this problem: pass expression itself
> into converter and reevaluate this expression every time when
> conversion is performed. Fortunately I need this behaviour for my
> custom converter (not for convertDateTime that I have shown in example
> above).
>
> I know how to do it (I mean pass expression instead of object) in JSP,
> but I am not sure how it can be done in facelets (I am using it only
> for 2 days :). Is it possible to write custom ConvertHandler to do it?
>
> Best regards,
> Konstantin
>
> --
> http://step-inside.org
>   


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