JSF Data Table help

Question

I have the following dataTable columns
Completed Status | Course |Period| YearCompleted | Course Name and Number| Institution | Credits | Grade |
suppose there are 10 rows underneath this table. I want the user to fill all the fields except grade. I achieve this by placing the "required = true" attribute underneath every field. But for Grade I have special situation.
The Completed Status is a drop down. with 2 options - 'completed', and 'in progress'.
If Completed Status = completed then the Grade is required,
but if completed status = 'in progress' then grade is not required.
How can I achieve this. If I can do this only at the backing bean then how can I get the missed row id of the field "Grade" and put a new FacesMessage.
Any help is really appreciated.
Regards
Sandeep

Answer 1

Thanks for the suggestion and I tried implementing the same.I dont know why i am not getting the <h:message.> for Grade.am I missing any configuration settings.
I have the following info for completedStatus and Grade.
<h:dataTable value="#{Bean.ArrayList}" var="dt" styleClass="entryTable"  border="1" >
<h:column headerClass="tableHeading2">
<f:facet name="header">
<h:outputText value="Completed Status"></h:outputText>
</f:facet>
<h:panelGrid columns="1">
<h:selectOneMenu id="status" value="#{dt.completedStatus}" required="true" requiredMessage="Please select a status">
<f:selectItems value="#{AP3b.statusItems}"/>
</h:selectOneMenu>
<h:message for="status" style="color:red" ></h:message>
</h:panelGrid>
</h:column>and for Grade I put the following code
<h:column headerClass="tableHeading2">
<f:facet name="header">
<h:outputText value="Grade"></h:outputText>
</f:facet>
<h:panelGrid columns="1">
<h:inputText value="#{dt.grade}" maxlength="4" size="4"  id ="grade"
required = "#{dt.completedStatus eq 'completed'}" requiredMessage="Grade is required"></h:inputText>
<h:message for="grade"  style="color:red"></h:message>
</h:panelGrid>
</h:column>Regards
Sandeep