Computed property with `#each` won't update - ember.js

Question

I've created a computed property that relies on all records in the store.
I've tried making the property update on adding/removing records with .property('todos.#each.id'), .property('model.#each.id'), .property('#each.id'), .property('#each') and other combinations, no luck so far. :( When i create new records, existing recrods' property would not update.
Here's a fiddle: http://jsbin.com/UDoPajA/211/edit?output
The property is otherTodos on the Todo controller. This property is used by the <select> dropdown list on the page (via {{view Ember.Select}}).

Answer 1

You're out of scope of the collection. You'll need to get access to the todos controller in order to have a computed property based off of its model. needs will handle this use case. http://emberjs.com/guides/controllers/dependencies-between-controllers/
Additionally to make an easy to access alias to the todos controller's model we use computed.alias. http://emberjs.com/api/#method_computed_alias
Todos.TodoController = Ember.ObjectController.extend({
needs:['todos'],
todos: Ember.computed.alias('controllers.todos.model'),
....
foo: function(){
}.property('todos.#each.id')
});
PS note of caution, in your code you are creating multiple instances of Ember Data filter, filter collections are meant to be live collections that are long living and update as records are added/removed from the store. You might just want to grab the model from todos and filter over it instead of creating a new store filter (which then avoids the async code as well, not that that is an issue).
Here's an implementation that would avoid that (no point in using it as a setter, you are only getting from it):
otherTodos: function() {
var model = this.get('model'),
thisId = model.get('id');
var todos = this.get('todos').filter(function (todo) {
return todo.get('id') !== thisId;
});
var selectContent = todos.map( function(todo){
var selectContent = {
title: todo.get('title'),
id: todo.get('id')
};
return selectContent;
});
return selectContent;
}.property('todos.#each.id'),
Here's an updated jsbin of your code: http://jsbin.com/UDoPajA/216/edit