Problem with f:attribute and EL.

Question

Hello ppl,
Im trying to add a atribute a component, with EL, but when i try to get the components atrributes, this parameter isent there. The JSF spec says that the f:param accepts expressions but its not working.
Help please.
<rich:dataTable id="tableMetas"
          value="#{encaminhamentosManager.encaminhamentos}"
          var="encaminhamento" style="width:100%;"
          onRowMouseOver="this.style.backgroundColor='#CCDDEE'"
          onRowMouseOut="this.style.backgroundColor='#{a4jSkin.tableBackgroundColor}'">
          <rich:column>
               <h:commandLink value="#{encaminhamento.candidato.nome}"
                    actionListener="#{consultaAlunoManager.avancar}" >
                    <f:attribute name="nextMapping" value="buscar_avaliacao"/>
                    <f:attribute id="candidato"  name="candidato"
                    value="#{encaminhamento.candidato}"/>
               </h:commandLink>
          </rich:column>
</rich:dataTable>And my ActionListener try to acess like this:
  public void avancar(ActionEvent event) {
    FacesContext faces = FacesContext.getCurrentInstance();
    Application app = faces.getApplication();
    HtmlCommandLink link = (HtmlCommandLink) event.getComponent();
    String nextMapping = (String) link.getAttributes().get("nextMapping");
    //NULL
    Candidato candidato = (Candidato) link.getAttributes().get("candidato");
  }the String nextMapping is right, but the Candidato isent in the atrributes.
Thanks for the help
Ferry

Answer 1

You're passing an out-of-scope datatable row to the f:attribute value. The f:attribute is component-specific, not row-specific.
Rather use HtmlDataTable#getRowData() inside the action method to retrieve the current row from the datatable.
I don't know how to do it in the rich:dataTable (check the API spec yourself), so I'll give a basic example with h:dataTable:<h:dataTable binding="#{myBean.table}" value="#{myBean.rows}" var="row">
    <h:column><h:commandLink value="click here" action="#{myBean.action}" /></h:column>
</h:dataTable>MyBeanprivate HtmlDataTable table;
private List<RowObject> rows;
// + getters + setters
public void action() {
    RowObject currentRow = (RowObject) table.getRowData();
    // Handle.
}Also see http://balusc.xs4all.nl/srv/dev-jep-dat.html for some new insights.