Ember Data ActiveModel Adapter

Installation

Ember CLI

ember install active-model-adapter

Rails

This gem comes bundled with Ember Rails. If you want to specify a specific version in your Gemfile, you can reference the active-model-adapter-source gem and it will get loaded by Ember Rails:

gem 'active-model-adapter-source', '~>1.13' # or whatever version you need

Bower

bower install --save active-model-adapter

Script Tags

Grab a copy of active-model-adapter.js from http://github.com/ember-data/active-model-adapter-dist

Usage

You should make an ApplicationAdapter if you don't already have one:

// app/adapters/application.js
import ActiveModelAdapter from 'active-model-adapter';

export default ActiveModelAdapter.extend();

If you need to subclass the ActiveModelSerializer, you can import it into your serializer:

// app/serializers/post.js

import { ActiveModelSerializer } from 'active-model-adapter';

export default ActiveModelSerializer.extend();

Description

The ActiveModelAdapter is a subclass of the RESTAdapter designed to integrate with a JSON API that uses an underscored naming convention instead of camelCasing.

It has been designed to work out of the box with the active_model_serializers Ruby gem. This Adapter expects specific settings using ActiveModel::Serializers, embed :ids, embed_in_root: true which sideloads the records.

JSON Structure

The ActiveModelAdapter expects the JSON returned from your server to follow the REST adapter conventions substituting underscored keys for camelcased ones. Unlike the DS.RESTAdapter, async relationship keys must be the singular form of the relationship name, followed by "_id" for DS.belongsTo relationships, or "_ids" for DS.hasMany relationships.

Conventional Names

Attribute names in your JSON payload should be the underscored versions of the attributes in your Ember.js models. For example, if you have a Person model:

// app/models/famous-person.js

export default var FamousPerson = DS.Model.extend({
  firstName: DS.attr('string'),
  lastName: DS.attr('string'),
  occupation: DS.attr('string')
});

The JSON returned should look like this:

{
  "famous_person": {
    "id": 1,
    "first_name": "Barack",
    "last_name": "Obama",
    "occupation": "President"
  }
}

Let's imagine that Occupation and Person are just another model:

// app/models/person.js

export default var Person = DS.Model.extend({
  firstName: DS.attr('string'),
  lastName: DS.attr('string'),
  occupation: DS.belongsTo('occupation')
});

// app/models/occupation
App.Occupation = DS.Model.extend({
  name: DS.attr('string'),
  salary: DS.attr('number'),
  people: DS.hasMany('person')
});

The JSON needed to avoid extra server calls, should look like this:

{
  "people": [{
    "id": 1,
    "first_name": "Barack",
    "last_name": "Obama",
    "occupation_id": 1
  }],
  "occupations": [{
    "id": 1,
    "name": "President",
    "salary": 100000,
    "person_ids": [1]
  }]
}

Development Installation

• git clone this repository
• npm install
• bower install

Running Tests

• ember test
• ember test --server

Building

• ember build

For more information on using ember-cli, visit http://www.ember-cli.com/.