JSON Nesting with Ember.js and Rails

Question

JSON Nesting with Ember.js and Rails

I'm currently developing a simple Ember / Rails application that involves multiple nested relationships. For instance:

class Release < ActiveRecord::Base
  has_many :tracks
end

Upon accessing my Releases endpoint, I receive JSON data in the following format:

{
  releases: [{
    id: 1,
    name: "Release Name",
    artist: "Artist Name",
    tracks: [{
      id: 1,
      name: "Track 1",
    },
    {
      id: 2,
      name: "Track 2",
    }]
  }]
}

I have done extensive research online but haven't found a solution yet. How can I link the "Track" model to Ember so that I can simultaneously display a release with its associated tracks?

Should I use DS.hasMany, set async:true, or utilize embedded:true? None of these approaches seem to be effective for me.

Versions:

Ember: 1.4.0-beta.1+canary.011b67b8
Ember Data: 1.0.0-beta.5+canary.d9ce2a53
Handlebars: 1.1.1
jQuery: 1.10.2

javascript ruby-on-rails json ember.js

Answer 1

Answer №1

I have successfully implemented this solution using Active Model Serializer in combination with DS.RESTAdapter.

Here is an example of the Rails User Model:

class User < ActiveRecord::Base
  has_many :photos
end

And here is the corresponding Rails User Serializer:

class UserSerializer < ActiveModel::Serializer
  attributes :id, :name
  has_many :photos, embed: :ids, key: "photos", include: true
end

The key point lies in the arguments provided for has_many. By specifying them as a second array rather than an embedded array and setting the association title to 'photos', we meet the default requirements of Ember.

This setup results in Rails returning JSON structured like this:

{
  user: {
    id: 1,
    name: "Joe Bloggs",
    photos: [1,2]
  },
  photos: [
    {
      id: 1,
      imageSrc: "/photo1.jpg"
    },
    {
      id: 2,
      imageSrc: "/photo2.jpg"
    }
  ],
}

To fully utilize this in Ember, define the user model as follows:

App.User = DS.Model.extend({
  photos: DS.hasMany('photo'),
  name: DS.attr("string")
});

Lastly, set up a route to load the user model in Ember:

App.UserShowRoute = Ember.Route.extend({
    model: function(params){
    return this.store.find('user', params.user_id);
  }
});

Answer 2

I have successfully implemented this solution using Active Model Serializer in combination with DS.RESTAdapter.

Here is an example of the Rails User Model:

class User < ActiveRecord::Base
  has_many :photos
end

And here is the corresponding Rails User Serializer:

class UserSerializer < ActiveModel::Serializer
  attributes :id, :name
  has_many :photos, embed: :ids, key: "photos", include: true
end

The key point lies in the arguments provided for has_many. By specifying them as a second array rather than an embedded array and setting the association title to 'photos', we meet the default requirements of Ember.

This setup results in Rails returning JSON structured like this:

{
  user: {
    id: 1,
    name: "Joe Bloggs",
    photos: [1,2]
  },
  photos: [
    {
      id: 1,
      imageSrc: "/photo1.jpg"
    },
    {
      id: 2,
      imageSrc: "/photo2.jpg"
    }
  ],
}

To fully utilize this in Ember, define the user model as follows:

App.User = DS.Model.extend({
  photos: DS.hasMany('photo'),
  name: DS.attr("string")
});

Lastly, set up a route to load the user model in Ember:

App.UserShowRoute = Ember.Route.extend({
    model: function(params){
    return this.store.find('user', params.user_id);
  }
});

JSON Nesting with Ember.js and Rails

Answer №1

Similar questions

Is it more suitable for a library used by getStaticProps to be classified as a normal dependency or a dev

Invalid Data Pusher for User Information in Next JS

Add a Page to Your Domain Name using the Text Input Box

What is the best way to change the "MuiPaper-elevation1" attribute in a Card element within Material-UI?

Struggling with transitioning from the Twitter search API to the status API

What steps should I take to ensure that Vim properly formats the indentation for this JavaScript code?

Tally up identical words without considering differences in capitalization or extra spaces

Reduce JSON for efficient deserialization and persistence of intricate POJOs using JPA/Hibernate

Discover the steps to convert an image to base64 while circumventing the restrictions of the same-origin policy

Ensuring promise doesn't resolve until the IF STATEMENT is executed

I am currently working on obtaining images that are saved by their URL within a PHP file. These images are located within a directory named "images."

Issues with loading content in jQuery's ajax() function

Horizontal Panning Feature for D3 Horizontal Bar Charts

What is the best way to keep a text editable in a razor editor without it vanishing?

Creating dynamic web content using KaTeX and Node.js

I'm trying to create a horizontal list using ng-repeat but something isn't quite right. Can anyone help me figure out

Executing <script> tags inside <template> on vue js

How would you utilize jQuery to access the "option" array of a select control with the attribute of multiple=true by utilizing the find() method?

Load components dynamically and place them in a flexible position based on the context

Expanding the flexbox container to accommodate additional divs when they are added