Rendered in column

Question

Hi
I want to display the following column only when dependant.strOpti == 'OPTI'. When I use the following
code I get illegal state exception:
<h:column id="colGroup" rendered = "#{dependant.strOpti == 'OPTI'}"/>
                <f:facet name="header">
                        <h:outputText id="otxtGroup" value="Comment" rendered = "#{dependant.strOpti == 'OPTI'}"/>
                </f:facet>
                 <h:outputText value="ALL DEPENDENTS COVERED" rendered = "#{dependant.strOpti == 'OPTI'}"/>
                 <h:outputText value="" rendered = "#{dependant.strOpti == ''}"/>
        </h:column>However when I use the following code, no exceptions but the Column will be display when dependant.strOpti
is not OPTI.
<h:column id="colGroup">
                <f:facet name="header">
                        <h:outputText id="otxtGroup" value="Comment" />
                </f:facet>
                 <h:outputText value="ALL DEPENDENTS COVERED" rendered = "#{dependant.strOpti == 'OPTI'}"/>
                 <h:outputText value="" rendered = "#{dependant.strOpti == ''}"/>
        </h:column>Is there some way to fix this?
Thanks
Murthy

Answer 1

BalusC wrote:
murthy64 wrote:
I am very new to JSF. I read the roseindia.net tutorials.
I don't understand your point "the rendered attribute a column cannot be determined at the row object level, but only at the backing bean level."
Could you please elaborate?I did not say that you cannot use the rendered attribute of a column. I have only said that you cannot determine it at the row level, but only at the table level. So replace rendered="#{rowObject.booleanValue}" by rendered="#{managedBean.booleanValue}.Still not clear. Let me rephrase. The table has several columns. How do I prevent one of the columns from appearing? I used the obvious rendered in the
column tag which did not work. I don't want the column to be suppressed at the row level. The column header should not appear when
a rendered test fails.
Here is the table code:
<h:panelGrid width="100%" columns="1" rendered="#{not subscriberListBean.requestDTO.bNoDependents}">
<h:dataTable id="dTblDependants" width="100%" border="0" cellspacing="0"
     cellpadding="4" styleClass="tblContent" style="text-align: left;" columnClasses="mainContent"
     rowClasses="tblContent,tblContentAlternate" headerClass="tblHeaders"
     value="#{subscriberListBean.requestDTO.arrDepAuthDTO}"
     var="dependant" rendered="#{not subscriberListBean.requestDTO.bNoDependents}">
     <h:column id="colFirstName">
          <f:facet name="header">
               <h:outputText id="otxtFirstName" value="#{bundle.otxtFirstName}" />
          </f:facet>
<f:verbatim><strong></f:verbatim>
          <h:commandLink id="clinkDependantClaim_Click" action="#{subscriberListBean.lnk_SubscriberNameClick}"
               onmouseup="hideDepList(); return true;"
               rendered="#{dependant.strStatus == 'ACTIVE'}">
          <h:outputText id="otxtDepFirstName" value="#{dependant.strDepFirstName}" />
          </h:commandLink>
          <h:outputText value="#{dependant.strDepFirstName}"
                    rendered="#{dependant.strStatus == 'INACTIVE'}" />
          <f:verbatim><strong></f:verbatim>
     </h:column>
     <h:column id="colDOB">
          <f:facet name="header">
               <h:outputText id="otxtDOB" value="#{bundle.otxtDOB}" />
          </f:facet>
          <h:outputText value="#{dependant.strDepDOB}" />
     </h:column>
     <h:column id="colStatus">
          <f:facet name="header">
               <h:outputText id="otxtStatus" value="#{bundle.otxtStatus}" />
          </f:facet>
          <h:outputText value="#{dependant.strStatus}"/>
     </h:column>
      <h:column id="colOpti" >
                <f:facet name="header">
                        <h:outputText id="otxtGroup" value="Comment" />
                </f:facet>
                 <h:outputText value="ALL DEPENDENTS COVERED" rendered = "#{dependant.strOpti == 'OPTI'}"/>
                 <h:outputText value="" rendered = "#{dependant.strOpti != 'OPTI'}"/>
        </h:column>
</h:dataTable>
</h:panelGrid>I'd appreciate if you can clarify to me with an example.
Thanks
Murthy