Emberjs adding objects to ArrayController, server query is immutable - ember.js

Question

I'm trying to add objects to my Emberjs Arraycontroller. I have a "create" action that fires when a button is pushed. This works fine but I can't seem to add the element with the this.pushObject function to the ArrayController. I get this error message:
Uncaught Error: The result of a server query (on App.Software) is immutable.
I guess this is because I'm using the RESTAdapter to load data and it does not like that I'm adding elements manually?
Here is my controller and the create action.
App.SoftwareIndexController = Ember.ArrayController.extend({
sortProperties: ['revision'],
create:function(){
var revision = $('#software_revision').val();
var doc = $('#software_document').val();
var software = App.Software.createRecord({
product_id: 1,
revision: revision,
doc: doc
});
this.pushObject(software);
}
});
Here is the route
App.SoftwareIndexRoute = Ember.Route.extend({
setupController:function(controller){
var product_id = 1;
controller.set('content', App.Software.find({product_id:1}));
}
});
Here is the model and store
App.Store = DS.Store.extend({
revision: 12,
adapter: 'DS.RESTAdapter'
});
DS.RESTAdapter.configure("plurals", {
software: "software"
});
App.Software = DS.Model.extend({
revision: DS.attr('string'),
doc: DS.attr('string'),
verified: DS.attr('boolean')
});
And here is the template view with the create form and list of software
<script type="text/x-handlebars" data-template-name="software/index">
<p>
<fieldset>
<legend>Create a new software revision</legend>
<label for="software_revision">Revision</label>
<input id="software_revision" name="software_revision" type="text" placeholder="">
<label for="software_document">Document ID</label>
<input id="software_document" name="software_document" type="text" placeholder="">
<button class="btn btn-success" {{action create}}>Create</button>
</fieldset>
</p>
{{#if length}}
<table class="table">
<thead>
<tr>
<th>Revision</th>
<th>Created</th>
</tr>
</thead>
<tbody>
{{#each controller}}
<tr>
<td>{{revision}}</td>
<td>{{createdAt}}</td>
</tr>
{{/each}}
</tbody>
</table>
{{else}}
<div class="alert alert-info">
<button type="button" class="close" data-dismiss="alert">×</button>
<strong>No software revisions found!</strong> start by creating a new revision above.
</div>
{{/if}}
</script>
Does anybody know the proper way to add new object to a ArrayController store? Thank you!
This works by the way if I change the route so it doesn't use the RESTAdapter
App.SoftwareIndexRoute = Ember.Route.extend({
setupController:function(controller){
var product_id = 1;
controller.set('content', []); // not using the RESTAdapter to load data
}
});

Answer 1

I had this same problem. It looks like the content returned from App.Software.find() is an immutable array. I was able to get around this by getting the content of the immutable array which returned a mutable array.
For example:
In ember 1.0.0 + ember data 1.0.0 beta 3:
this.store.find('software').then(function (softwares) {
controller.set('content', softwares.get('content'));
});
And this is only a guess but for the version you were working with at the time of your post:
controller.set('content', App.Software.find().get('content'));