update: {
    method: 'POST',
    params: {
      dest1: 'update'
    },
    transformRequest: angular.identity,
    'headers': {
      'Content-Type': undefined
    }
  }

var fd = new FormData();
var user = {
  _id: StorageFactory.getUserDetail()._id,
  loc: locDetails
};
fd.append('user', angular.toJson(user));
UserService.update(fd).
$promise.then(
  function(value) {
    console.info(value);
    updateUserDetailsInStorage();
  },
  function(err) {
    console.error(err);
  }
);

let fd = new FormData();
 let user = {
   _id: this.appManager.getUserDetail()._id,
   loc: locDetails
 };
 fd.append('user', JSON.stringify(user));
 this.userService.update(fd).subscribe((value) => {
   console.log(value);
   this.updateUserDetailsInStorage();
 }, (err) => {
   console.error(err);
 });

update(body) {
  console.log('update', body);
  const headers = new Headers({
    'Content-Type': undefined
  });

  const options = new RequestOptions({
    headers: headers
  });
  return this.http.post(`${app.DOMAIN}` + 'user/update', body, options)
    .map((res: Response) => {
      res.json();
    }).do(data => {
      console.log('response', data);
    })
}

let body = new FormData();
body.append('email', 'emailId');
body.append('password', 'xyz');
this.http.post(url, body);

var headers = new Headers();
headers.append('Content-Type', 'application/x-www-form-urlencoded');

let options = new RequestOptions({ headers: headers });

var body = "firstname=" + user.firstname + "&lastname=" + user.lastname + "&username=" + user.username + "&email=" + user.email + "&password=" + user.password;

return new Promise((resolve) => {
                this.http.post("http://XXXXXXXXXXX/users/create", body, options).subscribe((data) => {
                if (data.json()) {
                    resolve(data.json());
                } else {
                    console.log("Error");
                }
            }
        )
    });

updateProfileInformation(user: User) {
    this.userSettings.firstName = user.firstName;
    this.userSettings.lastName = user.lastName;
    this.userSettings.dob = user.dob;

    var headers = new Headers();
    headers.append('Content-Type', this.constants.jsonContentType);

    var s = localStorage.getItem("accessToken");
    headers.append("Authorization", "Bearer " + s);
    var body = JSON.stringify(this.userSettings);

    return this.http.post(this.constants.userUrl + "UpdateUser", body, { headers: headers })
      .map((response: Response) => {
        var result = response.json();
        return result;
      })
      .catch(this.handleError)
  }