Advanced Query Cache

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

services.query.js

import Ember from 'ember';

const {
  ArrayProxy,
  get,
  Service,
  inject
} = Ember;

/*
  Can't trust JSON.stringify() to be consistent
  This also isn't quite right but it's close.
*/
function stringify(obj, _isTop = true) {
  if (!obj) {
    return _isTop ? '-all' : 'null';
  }

  const keys = Object.keys(options);
  let key = '';
  keys.sort();
  
  for (let i = 0; i < keys.length; i++) {
    let value = keys[i];
    if (typeof value !== 'string') {
      value = stringify(value, false);
    }
    key += value;
  }
  
  return key;
}

export default Service.extend({
  store: inject.service(),
  
  query(type, options) {
    let key = `-q${type}:${stringify(options)}`;
    if (!this._cache[key]) {
      this._cache[key] = this.get('store').query(type, options);
    }
    
    return this._cache[key];
  },
  
  queryRecord(type, options) {
    let key = `-qOne${type}:${stringify(options)}`;
    if (!this._cache[key]) {
      this._cache[key] = this.get('store').queryRecord(type, options);
    }
    
    return this._cache[key];
  },
  
  queryLive(type, options) {
    return this.query(type, options)
      .then((r) => {
        const meta = get(r, 'meta');
        const content = this.get('store').peekAll(type);
      	const proxy = ArrayProxy.create({ content, meta });
        
        return proxy;
      });
  },
  
  init() {
    this._super();
    this._cache = Object.create(null);
  }
});

templates.application.hbs

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

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}