ember.js - Ember select for belongsTo doesn't update hasMany end -

i'm trying change belongsto using built in ember select view. however, when select box changes belongs attribute updated, not hasmany relationship. following jsbin shows behaviour http://jsbin.com/ewosiy/3/edit.

in example person hasmany events , event belongsto person. if change event belongsto, event removed original person never added new person.

i roll own select-box component wondered if ember select not updating both ends of relationship.

thanks.

in order make work, need use 'pushobject' in relation of 'person' object, need this:

change select this:

{{view ember.select     contentbinding=controllers.application.model     optionvaluepath=content.id     optionlabelpath=content.fullname     selectionbinding=selectedperson}} 

and in eventcontroller add this:

selectedpersonchanged: function() {   if(this.get('selectedperson')) {     this.get('selectedperson.events').pushobject(this.get('content'));   } }.observes('selectedperson')