Jaydata and Ember Set weirdness

Question

It seems that JayData EntitySet does not catch property changes when set through Ember like this:

//init at start
controller.set('todo', todoDB.Todos.attachOrGet({ Id:1}));

//later in app 
controller.set('todo.Completed', true);

//in the end
todoDB.saveChanges();

I tried this:

controller.todo.save();

But it didnt work!

Then I finally managed with this HACK(?):

var self = this;
mdefs = self.get('todo').getType().memberDefinitions;

for (var name in mdefs) {
   if (mdefs[name] 
       && mdefs[name].kind == "property" 
       && mdefs[name].definedBy == self.todo.getType())
      self.todo._setPropertyChanged(mdefs[name]);
}

self.get('todo').save();

So my question is... Is there any pretty(ish) way to do this?

Edit

look at @kingpin2k 's anwer bellow and the comments!

it turns out to be (apparently) only happening with an OData provider (havent tested others). couldnt reproduce with WebSQL.

Answer 1

The setter is invalid, you are setting todo to undefined.

//init at start
controller.set('todo',  todoDB.Todos.attachOrGet({ Id:1}));

http://emberjs.jsbin.com/AyIMIBi/1/edit

With remove and completed

http://emberjs.jsbin.com/AyIMIBi/2/edit

Additionally, tho unnecessary, if you were trying to grab the todo off the controller, you should use a getter.

controller.get('todo').save();