This is not true for Ember Data 1.0 beta +, see duplicate answer

Ember data still supports inline. You just need the right configuration. Here's how you can do it:

DS.RESTAdapter.map('App.Foo',{
    bar:{
        embedded:'always'
    }
})

App.Foo = DS.Model.extend({
    bar: DS.belongsTo(App.Bar,{embedded:'always'}),
});

Available values ​​for built-in: always and load.

load : child records are implemented at boot time, but should be kept as separate records. For this to work, baby records must have an identifier.

: . , , ( , ).

HasMany, .