// app/pods/post/model.js
import DS from 'ember-data';

export default DS.Model.extend({
  title: DS.attr('string'),
  body: DS.attr('string'),
});

import Lunr from 'ember-cli-lunr/lunr';
...
// Pass in models to create method, this indexes all properties on the model.
let posts = Lunr.create({ models: get(this, 'posts') });

// Or you could specify just the properties that you want to index via the properties key.
let posts = Lunr.create({ models: get(this, 'posts'), properties: ['title'] });

posts.search('lorem ipsum');

// app/pods/posts/controller.js
import Controller from '@ember/controller';
import { get, set } from '@ember/object';
import Lunr from 'ember-cli-lunr/lunr';

export default Controller.extend({
  // assuming posts array was set on controller from
  // setupController in route.
  posts: null,
  searchQuery: null,

  init() {
    this._super(...arguments);
    let postsIndex = Lunr.create({ models: get(this, 'posts') });
    set(this, 'postsIndex', postsIndex);
  },

  result: computed('searchQuery', function() {
    var query = this.get('searchQuery'),
        resultIds = get(this, 'postsIndex').search(query).mapBy('ref');

    return items.filter(function(item) {
      return resultIds.contains(item.get('id'));
    });
  });
});