Keep selectonechoice value

Question

Hi,
I'm facing a problem with SelectOneChoice wich is configured as a dynamic list. Base data source is variable, List data source is View object, and labeled item is included. When I go to another page, and after that return, value of SelectOneChoice is blank item. How can I avoid selectonechoice from reseting and keep previously selected item in list?
Thanks in advance
Dragana

Answer 1

Hi Dragna,
     When you go to the other page or when the value is selected you can record the currently selected value from the selectOneChoice object in a sesssionBean or by some other means.
     If you want to store it on a session bean.
     Create a session bean.
     Create a a managed property on the session bean.
     When you navigate to the new page or when the value is set record the selected value on property you created on the session bean.
     FacesContext ctx = FacesContext.getCurrentInstance();
     MySessionBean mySessionBean =(MySessionBean)JSFUtils.getManagedBeanValue(ctx, "mySessionBean");
     mySessionBean.setSelectedValue(selectOneChoice1.getValue);
     There is a method on backing bean which should look like this.
     public void setSelectOneChoice1(CoreSelectOneChoice selectOneChoice1) {       
this.selectOneChoice1 = selectOneChoice1;
     Add code similar to below
     public void setSelectOneChoice1(CoreSelectOneChoice selectOneChoice1) {       
this.selectOneChoice1 = selectOneChoice1;
     FacesContext ctx = FacesContext.getCurrentInstance();
     MySessionBean mySessionBean =(MySessionBean)JSFUtils.getManagedBeanValue(ctx, "mySessionBean");
     selectOneChoice1.setValue(mySessionBean.getSelectedValue());
     Now the value will be set when the page is painted unless something updates or happens to the data that populates the list.
     If you are concerned about the list being updated and the value no longer being present in the list or the order changed etc. You should record the value you are interested from
     the list that populates the selectOneChoice select items and set the selectOneChoice value to its position in the list when the user returns to the page.
     You can retrieve the results on bindings as follows.
     OperationBinding myBinding = bindings.getOperationBinding("myBinding");
     List l = ((List)myBinding.getResult()).get(0);
     int i = 0;
     boolean notFound = true;
     MyObject myObject= null;
     while (i < l.size() && notFound){
          myObject = (MyObject) l.get(i);
          if (myObject.mySelectItem = selectItem){
               notFound = false;
     this.selectOneChoice1.setValue(new Integer(i));
     Kind regards,
          Richie.