Create CSV and upload it to server with AngularJs

angular-post.js

function Post(url, data, options) {
    var deferred = $q.defer();
    $http.post(url, data, options)
        .success(function(res) {
            deferred.resolve(res);
        }).error(function(error, status) {
            deferred.reject({ error: error, status: status });
        });
    return deferred.promise;
}

csv.js

function JsonToCsv(json, keys) {
        var fields = [];
        if (keys) {
            fields = Object.keys(keys);
        } else {
            fields = Object.keys(json[0]);
        }

        var replacer = function(key, value) { return value == null ? '' : value; };
        var csv = json.map(function(row) {
            return fields.map(function(name) {
                return JSON.stringify(row[name], replacer);
            }).join(',');
        });
        csv.unshift(fields.join(','));
        csv = csv.join('\r\n');
        return csv;
    }

upload.js

var jsonData = {};
var fileName = 'your_file_name.extension';
var csv = JsonToCsv(jsonData);
var file = new Blob([csv], { type: 'application/octet-stream' });

var data = new FormData();
data.append('file', file, fileName);

Post('url/to/upload/', data,{
    transformRequest: angular.identity,
    headers: {
        'Content-Type': undefined
    }
});