Ember-cli-has-many-through

A small Addon to forward hasMany of hasMany relationships to the grand-parent.

Given an Ember-Data parent model with a hasMany children relationship on a child model that itself has a hasMany childrenOfChild relationship,
then you can use the hasManyThrough computed property provided by this Addon to concatenate all the childrenOfChild of child models
into a single childrenOfChild property on the parent model.

`````javascript
// models/parent.js
import DS from 'ember-data';
import hasManyThrough from 'dummy/macros/has-many-through';

export default DS.Model.extend({
children: DS.hasMany('child'),
// will concatenate the 'childrenOfChild' of each 'child' into a promiseArray CP
childrenOfChild: hasManyThrough('children'),
// if you want to name the property differently from the name given on the children hasMany property
childrenOfChildren: hasManyThrough('children', 'childrenOfChild'),
// this also works if the property on the 'child' model is an array (not a promise)
childrenOfChildArray: hasManyThrough('children')
});
````

````javascript
// models/child.js
import DS from 'ember-data';

export default DS.Model.extend({
childrenOfChild: DS.hasMany('childOfChild'),
childrenOfChildArray: []
});
````

````javascript
// models/child-of-child.js
import DS from 'ember-data';

export default DS.Model.extend({});
````

See the test/dummy app for further examples.

Installation

* git clone this repository
* npm install
* bower install

Running

* ember serve
* Visit your app at http://localhost:4200.

Running Tests

* npm test (Runs ember try:testall to test your Addon against multiple Ember versions)
* ember test
* ember test --server

Building

* ember build`

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