checkbox selection datatable jsf2 primefaces

Question

I use the datatable with checkbox selection feature, but when I click on footer button after selecting some rows, thoses rows don't be affected to my object selectedCommandes[], and the proof is that I added a row in the method that show me the lenght of selectedCommandes[] but it return 0, I don't know why, I think all my codes are good here is the datatable :

<p:dataTable id="cars" var="car" value="#{commandesUserController.mediumCommandesModel}" selection="#{commandesUserController.selectedCommandes}"  tableStyle="width:auto">  


                <f:facet name="header">  
                    Checkbox Based Selection  
                </f:facet>  

                <p:column selectionMode="multiple" style="width:18px" />  

                <p:column headerText="Model" style="width:100px">  
                    <h:outputText value="#{car.id}" />  
                </p:column>  

                <p:column headerText="Year" style="width:100px">  
                    <h:outputText value="#{car.dateEnvoi}" />  
                </p:column>  

                <p:column headerText="Manufacturer" style="width:100px">  
                    <h:outputText value="#{car.dateLivraisonRecommande}" />  
                </p:column>  

                <p:column>
                    <p:commandLink ajax="false" value="Editer" action="updateUser_v1" >
                        <f:setPropertyActionListener value="#{car}" target="#{editUserController.u1}" />  
                    </p:commandLink>
                </p:column>

                <p:column>
                    <p:commandLink  value="Supprimer" oncomplete="confirmation.show()" >
                        <f:setPropertyActionListener value="#{car}" target="#{commandesUserController.selectedCommande}" />  
                    </p:commandLink>
                </p:column>

                <p:column style="width:40px">                         
                    <p:commandButton id="selectButton" update=":myform:carDlg" oncomplete="carDialog.show()" icon="ui-icon-search" title="View">  
                        <f:setPropertyActionListener value="#{car}" target="#{commandesUserController.selectedCommande}" />  
                    </p:commandButton>                       
                </p:column>  


                <f:facet name="footer">  
                    <p:commandButton id="supprion" value="supprimer selection"   oncomplete="confirmation2.show()"   />  
                </f:facet>

            </p:dataTable>

and here is the button where there is the problem :

<f:facet name="footer">  
                    <p:commandButton id="supprion" value="supprimer selection"   oncomplete="confirmation2.show()"   />  
                </f:facet>

and here is the dialog that appears when I click in the button above :

<p:confirmDialog id="confirmDialog2" message="etes vous sur de vouloir supprimer ces commande avec tous les données et fichiers correspondants !"  
                             header="confirmation de suppression" severity="alert" widgetVar="confirmation2">  

                <p:commandButton id="confirm2" value="oui" update="cars" oncomplete="confirmation2.hide()"  
                                 action="#{commandesUserController.deleteCommandes()}" />  
                <p:commandButton id="decline2" value="non" onclick="confirmation2.hide()" type="button" />   

            </p:confirmDialog>

and here is the method in the managedBean :

public String deleteCommandes(){
   System.out.println("je suis dans delete l ensemble avec tous    =   "+selectedCommandes.length);
   for(int j = 0;j<selectedCommandes.length;j++){
      selectedCommandes[j].setListFichiers(uh.getFichiersById(this.selectedCommandes[j].getId()));
       for(int i = 0; i<selectedCommandes[j].getListFichiers().size();i++){
       //System.out.println("alors "+selectedCommande.getListFichiers().get(i).getId());
       uh.deleteFichier(selectedCommandes[j].getListFichiers().get(i));
   }
   uh.deleteCommande(selectedCommandes[j]);
   }


    return "commandesUser";

}

this line : System.out.println("je suis dans delete l ensemble avec tous = "+selectedCommandes.length); always return 0

I already created the class that implement SelectableDataModel

I hope I explained the problem

do you have any idea thank you

please, when you try this primefaces component, primefaces.org/showcase-labs/ui/…, it works or not — begiPass

siebz0r siebz0r · Accepted Answer · 2012-08-22T12:57:34

Is there a h:form placed around the p:dataTable? If this is not the case this is probably the cause of your problem.

On PrimeFaces' showcase page the structure looks like this:

<h:form>
    <p:dataTable>
        <!-- content of data table -->
    </p:dataTable>

    <p:confirmDialog>
        <!-- content of dialog -->
    </p:confirmDialog>
</h:form>

Putting the p:dataTable and the p:confirmDialog in a separate form should work too I guess:

<h:form>
    <p:dataTable>
        <!-- content of data table -->
    </p:dataTable>
</h:form>
<h:form>
    <p:confirmDialog>
        <!-- content of dialog -->
    </p:confirmDialog>
</h:form>

You can set a breakpoint on the setter of selectedCommandes to check is this is called. (Don't worry is the setter is called multiple times, this is normal.)

checkbox selection datatable jsf2 primefaces

3 Answers