-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Jonathan Harley wrote: > Cosma Colanicchia wrote: >> Reading that wiki post: >> >> "For these reasons [...] one should consider using a custom >> Navigation Handler adding the following capabilities:" >> >> I've understood that you have to code and plug your custom navigation >> handler to inplement this sort of navigation logic. I've never seen >> using EL expressions in <to-view-id> elements, anyone know if this is >> supported by the standard JSF nav. handler? > > No, it isn't, but it's very easy to do. See for example > http://forum.java.sun.com/thread.jspa?threadID=492721&messageID=2318174 > > > Jon. Thanks for that Jon
Based on the info in that thread and the linked articles I've knocked up my own Navigation handler. The trouble is, I dont seem to be able to get the <to-view-id> part of the navigation rule in order to fix the parameters. Here is my Navigation handler. package com.starjar.facestest; import javax.faces.application.NavigationHandler; import javax.faces.context.FacesContext; /** * Based on * http://forum.java.sun.com/thread.jspa?threadID=492721&messageID=2318174 * * * @author peter */ public class ParameterNavigationHandler extends NavigationHandler { NavigationHandler _base; /** Creates a new instance of ParameterNavigationHandler */ public ParameterNavigationHandler(NavigationHandler base) { super(); System.out.println("===IN ParameterNavigationHandler ctor ="); this._base = base; } public void handleNavigation(FacesContext fc, String actionMethod, String actionName) { System.out.println("====IN ParameterNavigationHandler ="); _base.handleNavigation(fc, actionMethod, actionName); String viewId = fc.getViewRoot().getViewId(); System.out.println("ORIGINAL VIEW " + viewId + " actionMethod " + actionMethod + " actionName " + actionName ); if ((viewId.indexOf("#{") != -1) && (viewId.indexOf("#{") < viewId.indexOf('}'))) { String bviewId = (String)fc.getApplication().createValueBinding(viewId).getValue(fc); System.out.println("NEW VIEW id " + bviewId ); if (bviewId != null) { fc.getViewRoot().setViewId(bviewId); } else { // you can throw the exception here } } } } Values of fields viewId = /secure/company/list.jsp actionMethod = #{quickNewCompanyBean.create} actionName = view-company I was expecting one of these value to be the <to-view-id> /secure/company/view.jsp?companyID=#{quickNewCompanyBean.companyID} Im no JSF expert and feel completly out of my depth here. Cheers Peter Henderson -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFEhc8HaeMEhGmZg50RAuBVAJ90lVNe5QjNRjOiHw3cAs6a1o2SnACeKgtx u8IAWTxZ4JVD/2HjvvtRdtA= =gxLN -----END PGP SIGNATURE-----
