PrimeFaces SelectOneRadio - primefaces

Question

I have one req , where I have a datable , which has x columns. One column contains 3 radio buttons .Which i am able to display . But my problem is I want one radio button to be selected by default .
What I am doing : On Load of datatable i am creating one variable (also i tried with SlectIte list) , but unable to get checked value.
Can anyone provide a simple working example?

Answer 1

This is my demonstration which present how to default radio value in datatable
XHTML
<h:form>
<p:dataTable var="catalog" value="#{radioView.catalogs}">
<p:column headerText="City">
<p:selectOneRadio id="city"
value="#{catalog.city}"
columns="3">
<f:selectItems value="#{radioView.cities}"
var="c"
itemLabel="#{city}"
itemValue="#{city}"/>
</p:selectOneRadio>
</p:column>
</p:dataTable>
<p:commandButton value="changeSelection"
process="#form"
update="#form"
actionListener="#{radioView.changeSelection}"/>
<p:commandButton value="submit"
process="#form"
update="#form"
actionListener="#{radioView.submit}"/>
</h:form>
ManagedBean
#ManagedBean
public class RadioView {
private List<Catalog> catalogs;
private List<String> cities;
#PostConstruct
public void init() {
cities = new ArrayList<String>();
cities.add("San Francisco");
cities.add("London");
cities.add("Paris");
//default radio value
Catalog c1 = new Catalog("San Francisco");
Catalog c2 = new Catalog("London");
Catalog c3 = new Catalog("Paris");
Catalog c4 = new Catalog("London");
catalogs = new ArrayList<Catalog>();
catalogs.add(c1);
catalogs.add(c2);
catalogs.add(c3);
catalogs.add(c4);
}
public List<Catalog> getCatalogs() {
return catalogs;
}
public void setCatalogs(List<Catalog> catalogs) {
this.catalogs = catalogs;
}
public List<String> getCities() {
return cities;
}
public void changeSelection(ActionEvent event){
for (Catalog catalog : catalogs) {
catalog.setCity("San Francisco");
}
}
public void submit(ActionEvent event) {
for (Catalog catalog : catalogs) {
System.out.println(catalog.getCity());
}
}
}
Domain
public class Catalog implements Serializable{
private String city;
public Catalog(String city){
this.city = city;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
}