New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
	sortByAmountSpent:Ember.computed.sort('model', function(a,b){
  	var ap = parseInt(Ember.get(a, 'amount')),
       bp = parseInt( Ember.get(b, 'amount'));
    	console.log("ap", typeof ap, "bp", typeof bp);
    if(ap !== bp) {
      return bp - ap;
    }
  }), 
	sortByDateOfPurchase:Ember.computed.sort('model', 'sortingAmout')
  ,actions:{
  	sortByAmount:function(){
      this.set("model", this.get('sortByAmountSpent'));
    },
    sortByDate:function(){
       this.set("model", this.get('sortByDateOfPurchase'));
    },
  }
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model(){
  	return [{"amount":"8733.00","date-of-purchase": "22/12/2017"},{"amount":"877.00","date-of-purchase": "22/11/2017"},{"amount":"8212.00","date-of-purchase": "22/9/2017"},{"amount":"7765.00","date-of-purchase": "22/10/2017"},{"amount":"778.00","date-of-purchase": "22/10/2016"}]
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
<a href="#" {{action 'sortByAmount'}}>Sort Amount</a>
<a href="#" {{action 'sortByDate'}}>Sort Date</a>
<ul>
{{#each model as |value|}}
<li>{{value.amount}} - :: - {{value.date-of-purchase}}</li>
{{/each}}
</ul>
<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"
  }
}