How to get current outcome in JSF 2

Question

I would like to get outcome value from navigation rules into a request scoped JSF 2 bean. How can I do that?

For example, when I press on a <h:link outcome="contacts"> and end up in the contacts page, then I would like to get the outcome "contacts" in the backing bean associated with the navigation menu.

faces-config.xml

<navigation-rule>
    ...
    <navigation-case>
        <from-outcome>contacts</from-outcome>
        <to-view-id>/pages/contacts.xhtml</to-view-id>
    </navigation-case>
    ...
</navigation-rule>

Not so. I just wanna get outcome for disable h:link into menu — Rusfearuth
I'll do it only as temporary solution. Do you have any ideas? — Rusfearuth
You can get current url, and then compare to faces-config's content ! — Rong Nguyen

kolossus kolossus · Accepted Answer · 2013-06-05T04:11:26

In JSF, AFAIK, only the ConfigurableNavigationHandler will have that information. So create a custom ConfigurableNavigationHandler that will stash the outcome in a request parameter for your consumption in the destination page.

Your custom navigation handler

public class NavigationHandlerTest extends ConfigurableNavigationHandler {

private NavigationHandlerTest concreteHandler;

   public NavigationHandlerTest(NavigationHandler concreteHandler) {
    this.concreteHandler = concreteHandler;
   }


@Override
   public void handleNavigation(FacesContext context, String fromAction, String    outcome){
    //Grab a hold of the request parameter part and save the outcome in it for
    //later retrieval
     FacesContext context = FacesContext.getCurrentInstance();
     ExternalContext ctx = context.getExternalContext();
     ctx.getRequestMap().put("currentOutcome", outcome);

    //resume normal navigation
     concreteHandler.handleNavigation(context, fromAction, outcome);   
    }   
  }

Configure your handler in faces-config.xml

  <application>
     <navigation-handler>com.foo.bar.NavigationHandlerTest</navigation-handler>
  </application>

Retrieve in your destination bean

  @ManagedProperty(value="#{param.currentOutcome}")
  String outcome;
  //getter and setter

How to get current outcome in JSF 2

1 Answers