helper for comparisons

.helpers.cp.js

export default Ember.Helper.helper(function(params) {
  const leftValue = params[0];
  const comparator = params[1];
  const rightValue = params[2];

  switch (comparator){
    case '=':
      return leftValue === rightValue;
      break;
    case '!=':
      return leftValue !== rightValue;
      break;
    case '>':
      return leftValue > rightValue;
      break;
    case '<':
      return leftValue < rightValue;
      break;
    case '>=':
      return leftValue >= rightValue;
      break;
    case '<=':
      return leftValue <= rightValue;
      break;
  }
});

README_01.md

Example of helper comparator to be used with 'if' handlebars.

A few useful links for the main source/gist are:

• View Twiddle
• Copy Twiddle
• View Gist

Original idea of this README taken from @rwjblue

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Helper for comparisons'
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
<p>One simple way of allowing {if} handlebars to do comparisons is by using a helper with the basic operators (=, !=, &lt;, &gt;,...)</p>
if (1 != 2) &gt;
{{#if (cp 1 '!=' 2)}}
	<b>The helper works! </b>
{{else}} 
	<b>nope, it doesn't work</b>
{{/if}}
<br>
<br>

twiddle.json

{
  "version": "0.4.11",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.11/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember-template-compiler.js"
  }
}