如何使用 Primefaces 从一个 xhtml 页面连接到另一个页面中的数据

Question

I am sending some variables from an .xhtml page to a controller wich sends data to another page that has another controller that handles the data of that page i have tried to use the setters and getters. the problem is that i dont really know to do with @PostConstruct.

XHTML file

<h:form id="frmStart">
 <p:growl id="growl" sticky="true" showDetail="true" />
 <p:panel id="pnlDatos">
 <p:dataTable id="tblObjeto" var="object" 
              value="#{parentControlador.listObjects}" 
              widgetVar="tblObjeto"
              emptyMessage="No hay datos">
  <f:facet name="header">
                            Objetos     
  </f:facet>




<p:column headerText="Contar" width="20">
 <p:commandButton class="pi pi-list" id="openDialogContar" value="Ver"
                                             action="#{parentControlador.FindItems(object)}"
                                             />
</p:column>
</p:dataTable>
</p:panel>
</h:form>

ParentControlador controller code

    @Inject Item item;

public String FindItems(ObjectParent objectParent) {
        String type="";
        String result="";
        //variable that i am going to send
                ItemControlador itemControlador = new ItemControlador();
                itemControlador.setCorte(objectParent);
        try {

       if(item.listarItemsA(objectParent.getCorte_id()).isEmpty()){
                    this.listaItems = item.listarItemsB(objectParent.getCorte_id());
                    type = "A";
                }else{
                    this.listaItems = item.listarItemA(objectParent.getCorte_id());
                    type = "B";
                } 
                this.objeto = objectParent;  

                result = type == "A"? "A.xhtml":"B.xhtml"; 
        } catch (Exception e) {
            FacesContext.getCurrentInstance().addMessage(null,
                    new FacesMessage(FacesMessage.SEVERITY_ERROR, "Error",
                            "The   objectParent doesnt have items "+e.getMessage()));
        }
        return result;
    }

This is the controller that handles the view for "A.xhtml", "B.xhtml"Item

     @PostConstruct
     private Parent parent;
    public void init() {
    //From what i see, thos is ejecuted when a .xhtml page is using the controller to retrieve the dataTable
    //
                if(item.listarItemsB(objectParent.getCorte_id()).isEmpty()){
                    this.listaObjetos = item.listarItemA(objectParent.getCorte_id());
                }else{
                    this.listaObjetos = item.listarItemsA(objectParent.getCorte_id());
                }

    }

    public Parent getCorte() {
        return corte;
    }

    public void setCorte(Parent parent) {
        this.parent = parent;
    }

how do i send data form an xhtml view that handles one controller X to view the data, send to another xhtml page that uses another controller Y, and show in the other page that uses Y controller to view the data of the data sent.

Answer 1

In case you need to make some data shared between two .xhtml views, you may put your data in a @SessionScoped controller which will have the same state among both views within the same browser-session and is visible to both views. Simply from page1.xhtml submit your data to the @SessionScoped controller and access it from page2.xhtml