sort name does not appears in column title link with default properties
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                 Key: DISPL-461
                 URL: http://jira.codehaus.org/browse/DISPL-461
             Project: DisplayTag
          Issue Type: Bug
          Components: Paging/Sorting
    Affects Versions: 1.1
            Reporter: kristian magnani


I'm trying to use displaytag with external paging and sorting. I've implemented 
the PaginatedList interface and trying to display an instance of that 
implemented class through the following code: 
 
<display:table requestURI="autoridades.do?sender=btPaginar" 
name="sessionScope.autoridades" class="padrao" sort="external" pagesize="10" 
id="a" cellpadding="0" cellspacing="0" >  
 
<display:column title="Autoridade" sortable="true" sortName="Autoridade" 
headerClass="sortable"> 
${a.nome} 
</display:column> 
 
<display:column title="Cargo" sortable="true" sortName="Cargo" 
headerClass="sortable"> 
${a.cargo} 
</display:column> 
 
<display:column title="Aniversário" sortable="true" headerClass="sortable"> 
<c:if test="${a.diaAniversario > 0 && a.mesAniversario > 0}"> 
${a.diaAniversario}/${a.mesAniversario}  
</c:if> 
</display:column> 
 
<display:column class="largura70" media="html" title="&nbsp" 
headerClass="sortable"> 
 
<a href="javascript: 
go(document.AutoridadesForm,'btVisualizar${a.codigo}')"><img 
src="./images/5a.gif" border="0" alt="Visualizar" /></a>  
 
<a href="javascript: go(document.AutoridadesForm,'btEditar${a.codigo}')"><img 
src="./images/editar.gif" border="0" alt="Editar" /></a>  
 
<a href="javascript: go(document.AutoridadesForm,'btExcluir${a.codigo}')"><img 
src="./images/cancelar.gif" border="0" alt="Excluir" /></a>  
 
</display:column>  
 
 
The table is displayed and paginations works fine, but sorting does not, as the 
link when a column head is clicked does not contain "sort=name", rather it 
shows a "sort=", an empty sort parameter, and without it it's not possible to 
the application to figure out what criterion should be used to sort the list. 
 
No default property is modified.

Does anyone has a sugestion about what is going on?

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