I get "Assertion failed": you have to include "id" in the hash passed by "push" when the API request

Question

I had to read every stack overflow question regarding my problem and couldn't find a solution. I am very new to Ember and Node, so please bear with me.

The server responds with this format:

{
"_id" : "53fddf59d72f9b4d3a3e164a"
"about" : [
    {"from" : "foo"},
    {"text" : "bar"},
    ... ]
}

My model looks like this:

App.About = DS.Model.extend({
    from : DS.attr('string'),
    text : DS.attr('string'),
    ...
}

Adapter and serializer:

App.ApplicationAdapter = DS.RESTAdapter.extend({
    host: 'http://localhost:3000'
});

App.ApplicationSerializer = DS.JSONSerializer.extend({
    primaryKey: '_id'
});

And my route:

App.AboutRoute = Ember.Route.extend({
    model: function() {
        return this.store.find('about');
    }
});

Use of rudders:

<script type="text/x-handlebars" data-template-name="about">
    <p>{{from}}</p>
</script>

The route will be displayed, but the console will throw an error:

DEBUG: ------------------------------- ember.js: 3285
DEBUG: Ember: 1.3.0 ember.js: 3285
DEBUG: Ember Data: 1.0.0-beta.5 ember.js: 3285
DEBUG: : 1.3.0 ember.js: 3285
DEBUG: jQuery: 1.10.2 ember.js: 3285
DEBUG: ------------------------------- ember.js: 3285
→ route: application Object {fullName: "route: application" } ember.js: 3285
: id , push ember.js: 3285
→ controller: about Object {fullName: "controller: about" } ember.js: 3285
""

?!

---

Update:

Kingpin2k, , . . .

Answer 1

.

 {
  "abouts" : [
    {
     "from" : "foo",
     "text" : "bar",
     "_id" : "53fddf59d72f9b4d3a3e164a"
    },
    {
     "from" : "foo2",
     "text" : "bar2",
     "_id" : "53fddf59d72f9b4d3a3e164k"
    },
    ... ]
 }