angular-post-fix.js

// Modifies $httpProvider for correct server communication (POST variable format)
angular.module('httpPostFix', [], function($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, subName, subValue, innerObj, i;

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

                if(value instanceof Array)
                {
                    for(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(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;
    }];
});

If a working demo is provided that would be really helpful

@sankety more info there