Question

I have a JSF data table

 <h:dataTable id="memberTable" value="#{bean.pList}" border="0" 
rowClasses="rowEven rowOdd" var="item">
<h:column rendered="#{item.isDisplay == Y}">
<h:outputText value="#{item.visitDate}" >
</h:outputText>
</h:column>
</datatable>

I have more such columns that are rendred based on a condition, when the condition is false and if I have the border=1; I see that blank cells are displayed. How can i display only the columns i want and have other ie. rendered=false not display blank cells?

Thanks,
Sai.

Answer 1

You can’t render an entire column based on the condition of a particular row. This makes technically no sense. You need to evaluate the condition based on a property of the parent bean.

<h:dataTable value="#{bean.pList}" var="item">
    <h:column rendered="#{bean.display == 'Y'}">
        <h:outputText value="#{item.visitDate}" />
    </h:column>
</datatable>

Move the public String getDisplay() method to the class behind #{bean}.

Note that I also fixed some other mistakes in your EL expression. You shouldn’t prefix the property name with is or get and you should quote string values. You can also better make it a boolean property.

private boolean display;

public boolean isDisplay() {
    return display;
}

with

rendered="#{bean.display}"