using an event aggregator with backbone

1-referencing.js

MedicationView = Backbone.View.extend({
  events: {
    "click #edit": "editMedication"
  },

  editMedication: function(){
    var editView = new AddEditView({model: this.model});
    editView.render();
  }
});

2-reference-instance.js

MedicationView = Backbone.View.extend({
  events: {
    "click #edit": "editMedication"
  },

  initialize: function(options){
    this.addEditView = options.addEditView;
  }

  editMedication: function(){
    this.addEditView.render();
  }
});

// initialize everything here... 
// 'medicationList' is a collection of medications
var addEditView = new AddEditView(...);

medicationlist.each(function(med){
  new MedicationView({model: med, addEditView: addEditView});
}

3-routing.js

MedicationRouter = Backbone.Router.extend({
  routes: {
    "edit/:id": "editMedication"
  },

  editMedication: function(id){
    var med = medicationList.get(id);
    this.addEditView.editMedication(med);
  }
});

AddEditView = Backbone.View.extend({

  editMedication: function(medication){
    this.model = medication;
    this.render();
  }

});

4-vent.js

var vent = _.extend({}, Backbone.Events);

5-event-aggregation.js

AddEditView = Backbone.View.extend({
  initialize: function(options){
    _.bindAll(this, "editMedication");
    options.vent.bind("editMedication", this.editMedication);
  },

  editMedication: function(medication){
    this.model = medication;
    this.render();
  }
});

MedicationView = Backbone.View.extend({
  events: {
    "click #edit": "editMedication"
  },

  initialize: function(options){
    this.vent = options.vent;
  },

  editMedication: function(){
    this.vent.trigger("editMedication", this.model);
  }
});

// initialize everything, and tie it all together
// with the event aggregator object: vent

var vent = _.extend({}, Backbone.Events);

var addEditView = new AddEditView({vent: vent});

medicationList.each(function(med){
  new MedicationView({model: med, vent: vent});
});

Hi Derick,

In example 3, the router object references the add/edit view with "this".( I think I have also seen other examples in my readings where routers seem to have built in references to collections and views) How can it do that? Does the router have to be instantiated with a reference to the view or collection in options?
Thanks,
Justin