Deprecation Guide for Injected container access

this.container has been private API since at least Ember 1.0.0. Unfortunately, there was not a public API available to use as an alternative. In the Ember 2.1 cycle a number of public API's were added to instance initializers that allowed access to the container and registry (see here and here for details of the public API's), but this new public API surface was not added to individual instances that were using this.container directly.

Ember 2.3 now provides a public API for usage from within any instances that were instantiated from the container.

This refactor is relatively straight forward for applications, but still leaves a few gaps for addons that want to function without deprecation on all versions while still using the newer paradigms. ember-getowner-polyfill was created for this exact reason.

Note that the getOwner API is natively available in Ember versions 2.3 and up, so you don't need to install a polyfill. Use it like you would use any other API, as in the After: example.

Before:

// Ember < 2.3
import Ember from 'ember';

export default Ember.Helper.extend({
  init() {
    this._super(...arguments);

    this.customThing = this.container.lookup('custom:thing');
  }
});

After:

do an ember install of the polyfill.

ember install ember-getowner-polyfill

After it installs, use as follows:-

// Ember < 2.3 needs the polyfill installed, Ember >= 2.3 available natively.
import Ember from 'ember';

export default Ember.Helper.extend({
  init() {
    this._super(...arguments);

    this.customThing = Ember.getOwner(this).lookup('custom:thing');
  }
});