How can I create a record with a nested/embedded record in Ember Data?

Question

How can I create a nested/embedded model when creating a record with Ember Data? Specifically, I want to create a post model with a nested/embedded model author. The following code gives me the error:

Error while processing route: index Assertion Failed: You cannot add a 'undefined' record to the 'post.author'. You can only add a 'author' record to this relationship. Error: Assertion Failed: You cannot add a 'undefined' record to the 'post.author'. You can only add a 'author' record to this relationship.

App.IndexRoute = Ember.Route.extend({
  model: function() {
    return this.store.createRecord('post', {
      title: 'My first post',
      body: 'lorem ipsum ...',
      author: {
        fullname: 'John Doe',
        dob: '12/25/1999'
      }
    });
  }
});

App.Post = DS.Model.extend({
  title: DS.attr('string'),
  body: DS.attr('string'),
  author: DS.belongsTo('author')
});

App.Author = DS.Model.extend({
  fullname: DS.attr('string'),
  dob: DS.attr('string')
});

Any ideas on how to do this? I also created a demo on JSBin: http://emberjs.jsbin.com/depiyugixo/edit?html,js,console,output

Thanks!

Kit Sunde · Accepted Answer · 2015-07-21 18:50:48Z

2

Relationships need to be assigned to instantiated models, plain objects won't work.

App.IndexRoute = Ember.Route.extend({
  model: function() {
    return this.store.createRecord('post', {
      title: 'My first post',
      body: 'lorem ipsum ...',
      author: this.store.createRecord('author', {
        fullname: 'John Doe',
        dob: '12/25/1999'
      })
    });
  }

answered Jul 21, 2015 at 18:50

Kit Sunde

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1 Comment

Brennan Roberts Over a year ago

Note that in order to have author show up in your POST request you'll need DS.EmbeddedRecordsMixin, as detailed in stackoverflow.com/a/45393935/470472.

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