Passing radio button values to the backing bean

Question

Hi all,
I need help with passing group of radio button values to a backing bean. I have page which has a dataTable to display a list of alerts. For each alert there are two radio buttons (YES & No) to indicate whether the email option for each alert is set or not. Now when i change the radio buttons and click on a submit button i should be able to pass these radio button values into action method in which i need to update the alerts. This is my code
<h:form>
<t:dataTable id="sub"
                   var = "alert"
                   value =#{subscriberBean.alertsList}">
<t:column>
<h:outputText value="#{alert.name}" />
</t:column>
<t:column>
<h:selectOneRadio id="subscriptions" value="#{alert.sendEmail}">
  <f:selectItem id="item1" itemLabel="Yes" itemValue="0" />
  <f:selectItem id="item2" itemLabel="No" itemValue="1" />
</h:selectOneRadio>
</t:column>
<t:dataTable>
<h:commandButton id="button1" value="Save changes" actionListener="#{subscriberBean.updateAlert}" />
</h:form>
{code}
I tried to to do something like below and get the updated list in the action event in the backing bean but it didn't work.
{code}
<h:commandButton id="button1" value="Save changes" actionListener="#{subscriberBean.updateAlert}" >
<f:attribute name="alerts" value="#{subscriberBean.alertsList}"/>
</h:commandButton>
// Backing Bean
public void updateAlert(ActionEvent e){
List<Alert updateList = (List<Alert>)event.getComponent().
                getAttributes().get("alerts");
{code}
Can someone advise how to get these update radio button values in my actionListener method.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

Answer 1

The value the user selected will be written to the sendEmail property of the managed bean named alert. We know this because you set the value attribute to #{alert.sendEmail}. So simply access the managed bean in your action method.