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Associated blog post : Using uuids with ember data

This addon adds a hook to your Ember Data Adapter (and all adapters extended from DS.Adapter) to generate the id of each record you create on the client-side.

The created ids are v4 UUIDs which are random "enough", quoting wikipedia:

the annual risk of a given person being hit by a meteorite is estimated to be one chance in 17 billion, which means the probability is about 0.00000000006 (6 × 10−11), equivalent to the odds of creating a few tens of trillions of UUIDs in a year and having one duplicate. In other words, only after generating 1 billion UUIDs every second for the next 100 years, the probability of creating just one duplicate would be about 50%.


ember install ember-cli-uuid


This Ember CLI module is intended for use with Ember Data. Once you install it (and the blueprint is applied) your ember data models will get a new behaviour when being created on the client-side. When creating a model like that :

store.createRecord('post', {
  title: 'My post'

Your model will get a v4 (random) UUID as his primary key :

  id: 'b4301bcb-a687-4f91-86c8-8b9241f6e6bc',
  title: 'My post'

Desactivate the "auto UUID" feature

You might need to turn off the auto generation of UUIDs on your Ember Data models. To achieve that, you will need to edit your config/environment.js file like this :

const ENV = {
  // ... others config vars 
  'ember-cli-uuid': {
    defaultUUID: false

Direct usage

You can also (if you need a UUID somewhere in your app) use it like that :

import {uuid} from 'ember-cli-uuid';
uuid(); // 6c84fb90-12c4-11e1-840d-7b25c5ee775a