pushObject to parent in has many relationshop

ember-data, ember.js

Solution

I assume you're saying the save isn't sending back the selections, cause your code for adding is correct.

It's important to note that promises happen asynchronously

            newUser.get('selections').then(function(selections){
                // this will happen after save
                selections.pushObject(newSelection);
            });

            newUser.save();

You should wait to save until the selection is pushed

http://emberjs.jsbin.com/gotasa/1/edit?html,js,output

            newUser.get('selections').then(function(selections){
                selections.pushObject(newSelection);
                newUser.save();
            });

Problem

When trying to push a newly created object to a parent in a has many relationship, I run in an error: ``` Assertion failed: The content property of DS.PromiseArray should be set before modifying it ``` Here is my code. ``` App.User = DS.Model.extend({ name : DS.attr('string'), selections : DS.hasMany('selection', {async: true}), creationDate : DS.attr('date') }); App.Selection = DS.Model.extend({ value : DS.attr('string') }); App.PollController = Ember.ObjectController.extend({ actions: { save: function(){ // create new user record in store var newUser = this.store.createRecord('user', { name : this.get('newUserName'), creationDate : new Date() }); // create new selection record in store var newSelection = this.store.createRecord('selection', { id : 11, value : "hallo" }); // push selection to user newUser.get('selections').pushObject(newSelection); // save new user newUser.save(); } } }); ``` Error accourse when I am trying to push the newSelection object to selections Array of user model. Also tried to change the line to ``` // push selection to user newUser.get('selections').then(function(selections){ selections.pushObject(newSelection); }); ``` Then I do not get an error but newSelection is not pushed to user. Selections array of user stays empty. What I am doing wrong? Am I on totally wrong way? Or is there a bug in EmberJs / Ember Data? I am using EmberJS 1.2.0 and Ember Data beta 5.

Original source