filter-select

application.controller.js

import Ember from 'ember';
import FilterSelectMixin from 'applicationfilter-select';
const {RSVP} = Ember;

export default Ember.Controller.extend(FilterSelectMixin, {
  search: '',
  filter: '',
  queryParams: ['search', 'filter'],

  sortAscending: false,
  sortProperties: ['createdAt'],
  filteredContent: [],

  i18n: Ember.inject.service(),

  filters: {
    featured: () => item.get('featured') === true,
    my: (item) => item.get('owner') === true,
    following: (item) => item.get('myWalk') !== null,
    completed: (item) => item.get('completed') === true,
  },

  retrieveContent: Ember.observer(
    'model.content.@each.title',
    'model.content.@each.description',
    'search',
    'filter', function() {
      new RSVP.Promise((resolve, reject) => {
        this.filterContent(
          this.get('model'),  // collection to be filtered
          this.get('search'), // search string
          ['title', 'description', 'author.name'], // attributes to search in
          this.filters[this.get('filter')], // additional filter function
          resolve //promise resolve function
        );
      }).then((filteredContent) => {
        debugger;
        this.set('filteredContent', filteredContent);
      }, (error) => {debugger;});
    }),

  filterSelectArray: Ember.computed('i18n.locale', function () {
    var i18n = this.get('i18n');
    return Ember.A([
      { value: '',            label: i18n.t('paths.filters.all') },
      { value: 'featured',    label: i18n.t('paths.filters.featured') },
      { value: 'my',          label: i18n.t('paths.filters.my') },
      { value: 'following',   label: i18n.t('paths.filters.following') },
      { value: 'completed',   label: i18n.t('paths.filters.completed') }
    ]);
  }),

  noPaths: Ember.computed('model.content.[]', function () {
    return this.store.all('path').get('length') === 0;
  }),

  actions: {
    edit(path) {
      this.transitionToRoute('path.edit', path);
    }
  }
});

application.filter-select.js

import Ember from 'ember';

export default Ember.Mixin.create({
  filterSelectArray: [],

  _lower: (val) => val.toLowerCase().trim(),
  _checkAttr: (x, y, lower) => x && (lower(x).indexOf(lower(y)) > -1),

  filterContent(collection, search, attrs=[], filterFunction, resolve) {
    // don't filter the content if no searchstring is provided
    if (!search) {resolve(collection);}

    let content = collection;

    // failsafe for when a string is passed instead of a collection of attributes
    if(!Array.isArray(attrs)) {attrs = [attrs];}

    // loop over all attributes and check if it contains the provided
    // searchstring
    content = content.filter((item) => {
      let found = false;

      attrs.forEach((attr) => {
        if(found) {return;}
        const attrFound = this._checkAttr(item.get(attr), search, this._lower);
        found = found || attrFound
      });

      return found;
    });

    // if an additional filter function is provided execute it aswell before
    // returning the resulting filtered content
    if (filterFunction) {
      content = content.filter(filterFunction);
    }

    debugger;
    resolve(content);
  }
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.4.17",
  "EmberENV": {
    "FEATURES": {}
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}