jwcdi="arts"
should be
jwcid="arts"
Hernâni Cerqueira wrote:
> Hello all, I'm new to Tapestry, this is my first project using it, and
> until now everything was doing perfectly. But now i'm having a small
> issue with the For component. I was doing something i've done
> sometimes already. I have a For component that iterates from a list of
> beans, and displays it's data... Until here ok, but i keep getting a
> ognlexception: source is null for getProperty(null, "title"). As a
> newbie, i have some difficulties on expressing myself on tapestry
> dialect, so here goes some piece of my code:
>
> html:
> (...)
> <span jwcdi="arts">
> <td class="item"><h2><span
> jwcid="title">Título</span></h2></td>
> <td class="item"><h3><span
> jwcid="body">Corpo</span></h3></td>
> <td class="item">
> <table width="100%">
> <tr jwcid="pages">
> <td width="100%" class="item"><h3><span
> jwcid="pageTitle">Página</span></h3></td>
> <td class="item"><img jwcid="open"/></td>
> </tr>
> </table>
> </td>
> <tr jwcid="@If" condition="ognl:hasFooter()">
> <td jwcid="@If" condition="ognl:hasAuthor()"
> class="footer"><h4>Escrito por: <span
> jwcid="author">Autor</span></h4></td>
> <td jwcid="@If" condition="ognl:hasMail()"
> class="footer"><h4><a jwcid="mailLink"><span
> jwcid="mail">mail</span></a></h4></td>
> <td jwcid="@If" condition="ognl:hasUrl()"
> class="footer"><h4><a jwcid="urlLink"><span
> jwcid="url">url</span></a></h4></td>
> </tr>
> </span>
> (...)
>
> page:
> (...)
> <asset name="open" path="context:/images/open_br.gif"/>
> <property name="currentArt"/>
> <component id="arts" type="For">
> <binding name="source" value="artList"/>
> <binding name="value" value="currentArt"/>
> </component>
> <component id="title" type="Insert">
> <binding name="value" value="currentArt.title"/>
> </component>
> <component id="body" type="Insert">
> <binding name="value" value="currentArt.body"/>
> </component>
> (...)
>
> java:
> (...)
> public List<HistArt> getArtList() throws TorqueException {
> return HistArtPeer.getArtList();
> }
> public abstract HistArt getCurrentArt();
> public abstract HistPage getCurrentPage();
> (...)
>
> the exception:
>
> ognl.OgnlException
> source is null for getProperty(null, "title")
> Stack Trace:
>
> * ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1652)
> * ognl.ASTProperty.getValueBody(ASTProperty.java:92)
> * ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
> * ognl.SimpleNode.getValue(SimpleNode.java:210)
> * ognl.ASTChain.getValueBody(ASTChain.java:109)
> * ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
> * ognl.SimpleNode.getValue(SimpleNode.java:210)
> * ognl.Ognl.getValue(Ognl.java:333)
> * ognl.Ognl.getValue(Ognl.java:310)
> (...)
>
> I hope that this is enough for you to tell-me wath i'm doing wrong
> this time, because i've already did similar stuff a couple of times
> and everything did just fine.
>
> Thanks in advance,
> Hernâni
>
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>
>
--
Justin Walsh
http://www.ewage.co.za
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