Ember-fetch

HTML5 fetch polyfill from github wrapped and bundled for ember-cli users

• intro to fetch
• spec
• usage
• origin repo

Installation

• ember install ember-fetch

Usage

import fetch from 'fetch';
import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    return fetch('/my-cool-end-point.json').then(function(response) {
      return response.json();
    });
  }
});

Use with Ember Data

To have Ember Data utilize fetch instead of jQuery.ajax to make calls to your backend, extend your project's application adapter with the adapter-fetch mixin.

// app/adapters/application.js
import DS from 'ember-data';
import AdapterFetch from 'ember-fetch/mixins/adapter-fetch';

export default DS.RESTAdapter.extend(AdapterFetch, {
  ...
});

Use with Fastboot

Currently, Fastboot supplies its own server-side ajax functionality, and including ember-fetch and the adapter-fetch mixin in a Fastboot app will not work without some modifications. To allow the node-fetch polyfill that is included with this addon to make your API calls, you must add an initializer to the consuming app's fastboot directory that overrides the one Fastboot utilizes to inject its own ajax.

Example:

// fastboot/initializers/ajax.js

export default {
  name: 'ajax-service',
  initialize() {
    // noop
    // This is to override Fastboot's initializer which prevents ember-fetch from working
    // https://github.com/ember-fastboot/ember-cli-fastboot/blob/master/fastboot/initializers/ajax.js
  }
}

Browser Support

• evergreen / IE10+ / Safari 6.1+ https://github.com/github/fetch#browser-support

does this replace ic-ajax?

• ideally yes, but only if you cater to IE9+
• for basic drop-in compat import ajax from 'ember-fetch/ajax'

What about all the run-loop and promise mixing details?

• taken care of for you

why is this wrapper needed?

• original emits a global
• original requires a Promise polyfill (ember users have RSVP)
• original isn't Ember run-loop aware

Won't this wrapper get out-of-sync?

• we actually don't bundle github/fetch rather we merely wrap/transform what comes from node_modules, so we should be resilient to changes assuming semver from the fetch module