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    <p>you forgot to attach rowCheckListener to your datatable like this </p> <pre><code> &lt;p:ajax event="rowSelectCheckbox" listener="#{forTest.check}" /&gt; </code></pre> <p>below code is working for me. i am able to see the id and decision on the dialog.</p> <p><strong>XHTML</strong>: i dint implement <strong>selectableDataModel</strong>, i just used <strong>rowKey attribute of datatable</strong>, you could use that as well</p> <pre><code>&lt;h:form id="form"&gt; &lt;p:dataTable id="multiCars" var="car" value="#{forTest.carList}" paginator="true" rows="10" rowKey ="#{car.id}" selection="#{forTest.selectedCars}" &gt; &lt;p:ajax event="rowSelectCheckbox" listener="#{forTest.check}" /&gt; &lt;f:facet name="header"&gt; Checkbox Based Selection &lt;/f:facet&gt; &lt;p:column selectionMode="multiple" style="width:18px" /&gt; &lt;p:column headerText="id"&gt; #{car.id} &lt;/p:column&gt; &lt;p:column headerText="decision" &gt; #{car.decision} &lt;/p:column&gt; &lt;f:facet name="footer"&gt; &lt;p:commandButton id="multiViewButton" value="View" icon="ui-icon-search" update=":form:displayMulti" oncomplete="multiCarDialog.show()"/&gt; &lt;/f:facet&gt; &lt;/p:dataTable&gt; &lt;p:dialog id="multiDialog" header="Car Detail" widgetVar="multiCarDialog" height="300" showEffect="fade" hideEffect="explode"&gt; &lt;p:dataList id="displayMulti" value="#{forTest.selectedCars}" var="selectedCar"&gt; id : #{selectedCar.id}, dateEnvoi #{selectedCar.decision} &lt;/p:dataList&gt; &lt;/p:dialog&gt; &lt;/h:form&gt; </code></pre> <p><strong>ManagedBean</strong>:</p> <pre><code>package managedbeans; import java.io.Serializable; import java.util.ArrayList; import java.util.List; import javax.faces.bean.ManagedBean; import javax.faces.bean.SessionScoped; import javax.jws.Oneway; import org.primefaces.event.SelectEvent; import beans.Car; @ManagedBean(name="forTest") @SessionScoped public class forTest implements Serializable { private List&lt;Car&gt; carList = new ArrayList&lt;Car&gt;(); private Car selectedCars[]; public Car[] getSelectedCars() { return selectedCars; } public void setSelectedCars(Car selectedCars[]) { this.selectedCars = selectedCars; } public List&lt;Car&gt; getCarList() { if(carList.size()==0) { setCarList(); } return carList; } public void setCarList() { this.carList.add(new Car(1, "car1")); this.carList.add(new Car(2, "car2")); this.carList.add(new Car(3, "car3")); } public void check(SelectEvent event) { System.out.println("in check"); } } </code></pre>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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