Handlebars.helpers.eachIn.js

/** 
 * Handlebars eachIn helper
 * Copyright (c) 2013, marlun78
 * MIT License, https://gist.github.com/marlun78/bd0800cf5e8053ba9f83
 *
 *  Description:
 *      A  Handlebars helper to iterate over object properties rather than arrays.
 *
 *  Usage:
 *      <script id="list-object" type="text/x-handlebars-template">
 *          <table>
 *              <caption>The object contains:</caption>
 *              <tr><th>Key</th><th>Value</th></tr>
 *          {{#eachIn data}}
 *              <tr><td>{{key}}</td><td>{{value}}</td></tr>
 *          {{/eachIn}}
 *          </table>
 *      </script>
 *      <script>
 *          //Handlebars.registerHelper('eachIn', ...
 *          
 *          jQuery(function($){
 *              'use strict';
 *              var tmpl = $('#list-object').html(),
 *                  generateObjectList = Handlebars.compile(tmpl),
 *                  html = generateObjectList({ data: {'a': 1, 'b': 2, 'c': 3 } });
 *              $('body').append(html);
 *          });
 *      </script>
 */
Handlebars.registerHelper('eachIn', function (context, options) {
    var key,
        fn = options.fn,
		ret = '';
	for (key in context) {
		if (context.hasOwnProperty(key)) {
			ret += fn({ key: key, value: context[key] });
		}
	}
	return ret;
});