The controller init method register all needed events within the controller and provides all related event handler.

    // Code examples
    this.on("model.ready", this.isModelReady);

The controller isModelReady method is an event handler and will be triggert by the event 'model.ready' with all available model data. Is the model ready the 'view.init' event will triggert by this handler with all available model data again.

    this.trigger(
        "view.init", 
        e.data
    );