AngularJS module transformRequest so that PHP can read POST

main.js

//courtesy: http://victorblog.com/2012/12/20/make-angularjs-http-service-behave-like-jquery-ajax/

angular.module('session', ['$strap.directives'], setPostHeader)
//angular def (router, run ect

/**
 * Set default header AJAX Angular agar bisa dibaca oleh PHP lewat POST
 * @param $httpProvider
 */
function setPostHeader($httpProvider) {
    // Use x-www-form-urlencoded Content-Type
    $httpProvider.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded;charset=utf-8';

    // Override $http service's default transformRequest
    $httpProvider.defaults.transformRequest = [function(data) {
        /**
         * The workhorse; converts an object to x-www-form-urlencoded serialization.
         * @param {Object} obj
         * @return {String}
         */
        var param = function(obj) {
            var query = '';
            var name, value, fullSubName, subValue, innerObj, i;

            for (name in obj) {
                value = obj[name];

                if (value instanceof Array) {
                    for (var i = 0; i < value.length; ++i) {
                        subValue = value[i];
                        fullSubName = name + '[' + i + ']';
                        innerObj = {};
                        innerObj[fullSubName] = subValue;
                        query += param(innerObj) + '&';
                    }
                } else if (value instanceof Object) {
                    for (var subName in value) {
                        subValue = value[subName];
                        fullSubName = name + '[' + subName + ']';
                        innerObj = {};
                        innerObj[fullSubName] = subValue;
                        query += param(innerObj) + '&';
                    }
                } else if (value !== undefined && value !== null) {
                    query += encodeURIComponent(name) + '=' + encodeURIComponent(value) + '&';
                }
            }
            return query.length ? query.substr(0, query.length - 1) : query;
        }
        return angular.isObject(data) && String(data) !== '[object File]' ? param(data) : data;
    }];
}