Ember.$ + pushPayload

gistfile1.js

  fetchImages: function() {
    var modelURL = this.store.adapterFor('collection-item').buildURL('collection-item', this.get('id'));
    var promise = new Ember.RSVP.Promise((resolve, reject) => {
      Ember.$.post(`${modelURL}/scrape_images`).then((payload) => {
        Ember.run(() => this.store.pushPayload('collection-item', payload));
        resolve(this);
      }, reject);
    });
    return this.isLoadingWhile(promise);
  },