How to write a custom converter for

by

It’s possible, whithout other database access, but i don’t know the best way. I use a very specific converter, works only for picklist. Try this:

@FacesConverter(value = "primeFacesPickListConverter")public class PrimeFacesPickListConverter implements Converter {
@Override
public Object getAsObject(FacesContext arg0, UIComponent arg1, String arg2) {
    Object ret = null;
    if (arg1 instanceof PickList) {
        Object dualList = ((PickList) arg1).getValue();
        DualListModel dl = (DualListModel) dualList;
        for (Object o : dl.getSource()) {
            String id = "" + ((Project) o).getId();
            if (arg2.equals(id)) {
                ret = o;
                break;
            }
        }
        if (ret == null)
            for (Object o : dl.getTarget()) {
                String id = "" + ((Project) o).getId();
                if (arg2.equals(id)) {
                    ret = o;
                    break;
                }
            }
    }
    return ret;
}

@Override
public String getAsString(FacesContext arg0, UIComponent arg1, Object arg2) {
    String str = "";
    if (arg2 instanceof Project) {
        str = "" + ((Project) arg2).getId();
    }
    return str;
}

and Picklist:

<p:pickList converter="primeFacesPickListConverter" value="#{bean.projects}" var="project" 
                        itemLabel="#{project.name}" itemValue="#{project}">

Work’s for me, improvements is necessary.

More Related Contents:

  1. Using a “Please select” f:selectItem with null/empty value inside a p:selectOneMenu
  2. Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes
  3. How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throws an error / not usable
  4. How to inject @EJB, @PersistenceContext, @Inject, @Autowired, etc in @FacesConverter?
  5. Real time updates from database using JSF/Java EE
  6. Unicode input retrieved via PrimeFaces input components become corrupted
  7. How to show details of current row from p:dataTable in a p:dialog and update after save
  8. PrimeFaces CSS look’n’feel missing and JS “Uncaught Reference Error: PrimeFaces is not defined”
  9. Display database blob images in inside
  10. File upload doesn’t work with AJAX in PrimeFaces 4.0/JSF 2.2.x – javax.servlet.ServletException: The request content-type is not a multipart/form-data
  11. PrimeFaces validator not fired
  12. Naming Container in JSF2/PrimeFaces [duplicate]
  13. How to bind dynamic content using ?
  14. Difference between rendered and visible attributes of
  15. h:messages does not display messages when p:commandButton is pressed
  16. Split java.util.Date over two h:inputText fields representing hour and minute with f:convertDateTime
  17. p:dataExporter does not recognize p:cellEditor
  18. JSF + PrimeFaces: `update` attribute does not update component
  19. PrimeFaces commandButton doesn’t navigate or update
  20. UISelectMany on a List causes java.lang.ClassCastException: java.lang.String cannot be cast to T
  21. p:commandButton vs. h:commandButton
  22. Reset input fields without executing validation
  23. p:selectOneMenu dropdown part scrolls and does not stay in position
  24. c:forEach inside primefaces(e.g. p:panelgrid) inside ui:repeat
  25. Primefaces valueChangeListener or
  26. Store PDF for a limited time on app server and make it available for download
  27. Calling Primefaces dialog box from Managed Bean function
  28. Remove all styling from Primefaces components?
  29. LazyInitializationException in selectManyCheckbox on @ManyToMany(fetch=LAZY)
  30. JSF resource versioning

Leave a Comment