leooo / ember-cli-has-many-through

hasManyThrough property for Ember-Data models - deprecated for https://github.com/britishgas-engineering/ember-data-has-many-through

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.

// 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')
});

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

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

// 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/.

ember-cli-has-many-through's Issues

Add log for when `child.get(childOfChildKey)` is null

JS Lint Errors

I love this addon! Thanks a lot!

Don't know if you've ran the module through JSHint, but it gives me the following warnings:

modules/ember-cli-has-many-through/macros/has-many-through-non-object.js: line 35, col 13, Bad line breaking before '?'.
modules/ember-cli-has-many-through/macros/has-many-through-non-object.js: line 53, col 13, Bad line breaking before '&&'.

modules/ember-cli-has-many-through/macros/has-many-through.js: line 35, col 13, Bad line breaking before '?'.
modules/ember-cli-has-many-through/macros/has-many-through.js: line 53, col 13, Bad line breaking before '&&'.