Ember Orchestrate

An Ember Data adapter for the Orchestrate.io API.

Note: This is still a WIP. If you have any issues or questions, please add them here.

Getting Started with Orchestrate

Using this addon requires an Orchestrate.io account. You can sign up here for a free account.

Usage

Installation

From within your Ember CLI application run the command:

ember install:addon ember-orchestrate

which is equivalent to:

npm install --save ember-orchestrate
ember g ember-orchestrate

The ember-orchestrate generator will install a node-http-proxy server which is required in order to make requests to the Orchestrate.io API. You will also need to set en environment variable with an api key provided from the Orchestrate.io dashboard.

export ORCHESTRATE_API_KEY=...

This is a quick way to setup up a development environment, however, in production you will need route requests to your own server. You can do this by simply changing the host address on the main Orchestrate adapter.

// app/adapters/application.js
import OrchestrateAdapter from 'ember-orchestrate/adapter';
 
export default OrchestrateAdapter.extend({
  host: 'http://your-api.com'
});

Setting up the adapter and serializer

// app/adapters/application.js
import OrchestrateAdapter from 'ember-orchestrate/adapter';
 
export default OrchestrateAdapter.extend();
 
// app/serializers/application.js
import OrchestrateSerializer from 'ember-orchestrate/serializer';
 
export default OrchestrateSerializer.extend();

Defining models

Defining models is the same as the existing Ember Data API. Models defined with the DS.Model class will interact with an Orchestrate collection of the same name. That is, a model defined as user will make requests to a collection called users by default. In addition, all attributes defined with DS.attr will persist to the collection when a record is saved/updated.

// app/models/user.js
import DS from 'ember-data';
 
export default DS.Model.extend({
  name: DS.attr('string'),
  email: DS.attr('string')
});

What if my collection is named differently?

If you would like to customize the name of the collection for a model, you can create a model-specific adapter:

// app/serializers/user.js
import OrchestrateSerializer from 'ember-orchestrate/serializer';
 
export default OrchestrateSerializer.extend({
  pathForType () {
    return 'custom-users-collection';
  }
});

Defining relationships

ember-orchestrate currently supports One-To-One, One-To-Many, and Many-To-Many relationships using Orchestrate's graph API. For example, consider the following model definitions:

// app/models/post.js
import DS from 'ember-data';
 
export default DS.Model.extend({
  comments: DS.hasMany('comment')
});
 
// app/models/comment.js
import DS from 'ember-data';
 
export default DS.Model.extend({
  post: DS.belongsTo('post')
});

When a comment is saved, the adapter will make three requests: one to create the comment, one to relate the post to the comment, and one to relate the comment to the post. For example, the following

// ... some controller
 
var post = this.get('post'); // reference to a post record
var comment = this.store.createRecord('comment', {
  post: post
});
 
comment.save();

will make the these requests:

=> POST orchestrate/v0/comments
=> PUT orchestrate/v0/comments/07908e521720677f/relation/post/posts/071d7e029320fb45
=> PUT orchestrate/v0/posts/071d7e029320fb45/relation/comments/comments/07908e521720677f

Removing relationships

If you want to delete a record and remove all relationships, simply use the destroyRecord method on the record.

In the case you have a Many-To-Many relationship and you want to dissociate a record from another, you can remove the relation with the destroyRelation method on through an instance of DS.ManyArray.

For example, the following will remove a tag relation from a post (assuming you've already defined a Many-To-Many relationship for the post and tag models):

// ... post view template
 
{{#each tag in post.tags}}
  {{tag.name}}
  <button {{action "removeTag" tag}}>x</button>
{{/each}}

// ... some controller
 
actions: {
  removeTag (tagRecord) {
    var post = this.get('post');
    post.get('tags').then(tags => {
      tags.destroyRelation(tag);
    });
  }
}

Finding records

Find records of a type

var posts = this.store.find('post'); // will return a max of 100 records by default

If you need to show more than 100 records at a time, the find and findQuery method will make recursive requests to load records up to the specified limit.

var posts = this.store.find('post', { limit: 200 }); // will make two requests
 
// => GET orchestrate/v0/posts?limit=100
// => GET orchestrate/v0/posts?limit=100&offset=100

Finding a single record

var post = this.store.find('post', '07908e521720677f');

Querying for records

The Orchestrate.io API allows collections to be queried using Lucene Query Parser Syntax.

To search a collection with the Ember-Orchestrate-Adapter, all you have to do is pass a plain object to the findQuery method with a query param.

For example, we could search for all posts that include the word noSQL:

var noSQLPosts = this.store.findQuery('post', { query: 'noSQL' });

Loading more records

Additional records can be requested with the loadMore method attached to a findQuery response. For example,

var posts = this.get('posts'); // the response returned by findQuery('post')
 
posts.loadMore();

will load 100 more post records into the store. There is also a boolean property on all responses returned by findQuery called hasNext. If this property is true, there are more records that can be requested from database.

For example, the hasNext property could be used show or hide a "load more" button for a list of posts.

// ... posts index view
 
{{#each post in posts}}
  {{post.title}}
{{/each}}
 
{{#if posts.hasNext}}
  <button {{action "loadMorePosts"}}>Load more</button>
{{/if}}

// ... some controller
 
actions: {
  loadMorePosts () {
    this.get('posts').loadMore();
  }
}

Development

• git clone this repository
• npm install
• bower install
• ember server
• Visit your app at http://localhost:4200.

Running Tests

• ember test
• ember test --server

Building

• ember build

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