Ember Data v1.0.0-beta.16 Released

– By Brendan McLoughlin

We are pleased to announce the release Ember Data 1.0.0-beta.16. It includes many bug fixes as well as several new features. As always this release can be obtained from npm (for use with ember-cli), rubygems, or bower. The builds are also available as static files at emberjs.com/builds

The 1.0.0-beta.16 release represents the effort of at least 31 contributors across over 112 commits.

New Core Contributor

Contributor Christoffer Persson has been given collaborator status and will help us triage issues, merge pull requests, and contribute bug fixes and documentation. Christoffer has been extremely active in triaging issues and contributing features and bug fixes to the Ember Data project.

Breaking Changes

The store now passes snapshots instead of records to adapter methods

In 1.0.0-beta.15 Ember Data introduce the Snapshot API and began passing snapshot instances into all serializers to prevent side-effects from occurring when inspecting relationships for serialization. This introduces some pain points in 3rd party adapters and serializers since they could not easily create snapshot instances without using private APIs. In Ember Data 1.0.0-beta.16 the store will now pass snapshot instances into adapters methods instead of record instances.

The following adapter methods now receive snapshots instead of records:

  • find(store, type, id, snapshot)
  • findMany(store, type, ids, snapshots)
  • findHasMany(store, snapshot, url, relationship)
  • findBelongsTo(store, snapshot, url, relationship)
  • createRecord(store, type, snapshot)
  • updateRecord(store, type, snapshot)
  • deleteRecord(store, type, snapshot)

The signature of buildURL(type, id, snapshot) has also been updated to receive snapshots instead of records.

This change removes the need for adapters to create snapshots manually using the private API record._createSnapshot() to be able to pass snapshots to serializers.

Snapshots are backwards-compatible with records (with deprecation warnings) and it should be pretty straight forward to update current code to the public Snapshot API:

post.get('id')           => postSnapshot.id
post.get('title')        => postSnapshot.attr('title')
post.get('author')       => postSnapshot.belongsTo('author')
post.get('comments')     => postSnapshot.hasMany('comments')
post.constructor         => postSnapshot.type;
post.constructor.typeKey => postSnapshot.typeKey

If you need to access the underlying record of a snapshot you can do so by accessing snapshot.record.

The full API reference of DS.Snapshot can be found here.


Store as a Service

The store has now been registered as a service. So when you are using Ember Data 1.0.0-beta.16 with Ember 1.10+ you can now inject the store into any Ember object managed by the container.

App.TweetComposerComponent = Ember.Component.extend({
  store: Ember.inject.service(),
  newTweet: function() {
    return this.get('store').createRecord('tweet', {});

Please give a warm thanks to martndemus for his work implementing this feature!

Mixins in Polymorphic Relationships

Igor Terzic Added support for using mixins in polymorphic relationships. This allows Ember Data to reference Mixins instead of Model classes as the type argument for relationships.

App.Comment = DS.Model.extend({
  owner: belongsTo('commentable', { polymorphic: true })

App.CommentableMixin = Ember.Mixin.create({
  comments: hasMany('comment')

Better Support for using multiple stores

James Murphy landed an awesome PR that makes it easier to use multiple stores in your Ember Application.


In addition to the major changes mentioned above this release also includes many bug fixes and documentation updates. Be sure to check out the change log for the full list of updates.