adapter.js

import ApplicationAdapter from './application';
import UrlTemplates from "ember-data-url-templates";

export default ApplicationAdapter.extend(UrlTemplates, {
  updateRecordUrlTemplate: '{+host}/posts/{id}{/updateEndpoint}',

  urlSegments: {
    updateEndpoint(type, id, snapshot) {
      return snapshot.get('_updateEndpoint');
    }
  },
});