Ember Router transitionTo nested route with params - ember.js

Question

App.Router.map(function() {
this.resource('documents', { path: '/documents' }, function() {
this.route('edit', { path: ':document_id/edit' });
});
this.resource('documentsFiltered', { path: '/documents/:type_id' }, function() {
this.route('edit', { path: ':document_id/edit' });
this.route('new');
});
});
And this controller with a subview event that basically transitions to a filtered document
App.DocumentsController = Ember.ArrayController.extend({
subview: function(context) {
Ember.run.next(this, function() {
//window.location.hash = '#/documents/'+context.id;
return this.transitionTo('documentsFiltered', context);
});
},
});
My problem is that this code works fine when Hash of page is changed.
But when I run the above code NOT w/ the location.hash bit and w/ the Ember native transitionTo I get a cryptic
Uncaught TypeError: Object [object Object] has no method 'slice'
Any clues?
Thanks
UPDATE:
App.DocumentsFilteredRoute = Ember.Route.extend({
model: function(params) {
return App.Document.find({type_id: params.type_id});
},
});
{{#collection contentBinding="documents" tagName="ul" class="content-nav"}}
<li {{action subview this}}>{{this.nameOfType}}</li>
{{/collection}}

Answer 1

The problem is that your model hook is returning an array, while in your transitionTo you are using a single object. As a rule of thumb your calls to transitionTo should pass the same data structure that is returned by your model hook. Following this rule of thumb i would recommend to do the following:
App.DocumentsController = Ember.ArrayController.extend({
subview: function(document) {
var documents = App.Document.find({type_id: document.get("typeId")});
Ember.run.next(this, function() {
return this.transitionTo('documentsFiltered', documents);
});
}
});
Note: I assume that the type_id is stored in the attribute typeId. Maybe you need to adapt it according to your needs.