Guestbook example - unable to pass serviceprovider correctly to the navmanager.

[Ramesh S]

I am still following the same example of guestbook. After the last issue was fixed, I got a few error messages, which pointed towards some parameters being not initialized. I thought I could fix it and made the following changes to gb.js. 

 var eventBus = new goog.events.EventTarget();

  

  var cache;

  /**

   * @type {relief.cache.Cache}

   * @private

  */

  this.cache_ = cache = new relief.cache.Cache();  

  

  var headers = new goog.structs.Map({

    'Content-Type': 'application/json'

  });  

  var rpc;

  /**

   * @type {relief.rpc.RPCService}

   * @private

  */

  this.rpc_ = rpc = new relief.rpc.RPCService(cache, headers);

  

  

  var auth;

  /**

   * @type {relief.auth.AuthManager}

   * @private

   */

  this.auth_ = auth = new relief.auth.AuthManager(eventBus);

  auth.setParentEventTarget(eventBus);

  var iframe = /** @type {!HTMLIFrameElement} */

           (goog.dom.getElement('history_frame')),

      input = /** @type {!HTMLInputElement} */

          (goog.dom.getElement('history_input')),

      content = /** @type {!Element} */ (goog.dom.getElement('content-root')); 

  var msgList = new gb.msg.MessageList();

followed by the existing code 

  // Replace instantiation of our old relief.handlers.CommonServiceProvider

  // with our snazzy new, and shorter-named, custom provider:

  var sp = new gb.ServiceProvider(msgList, gb.urls, cache, rpc, auth,

                                  iframe, input, content);

 

  // Then pass it to the NavManager, just like we used to.

  var nav;

  /**

   * @type {relief.nav.NavManager}

   * @private

   */

  this.nav_ = nav = new relief.nav.NavManager(sp);

But this doesn't seem to be working correctly. I read the guides but I am not sure if I am getting it right.

Thanks for the help.

[Jay Young]

There shouldn't be an event bus in the guestbook app.  If that was in the tutorial code somewhere, then I copy and pasted something incorrectly.  I used an event bus in the Relieved blog example app, but not here.  Do you see references to an event bus in the guestbook tutorial somewhere?

[Ramesh S]

My bad, I pasted the other code ( I was trying from the relieved blog ). I tried without event bus but it was giving error because accidentally I deleted the cache parameter from serviceprovider.

Thank you for the reply.