if ($input = $this->input->post()) {

            $user = new User_Model(Session::get('user_id', FALSE));
            $profile = new Profile_Model(Session::get('user_id', FALSE));

            $input_user = $this->input->post();
            $input_profile = $this->input->post();

            if ( ! $user->validate($input_user)) {
                foreach ($input_user->errors('form_errors') as $error) {
                    $errors[] = $error;
                }
            }

            if ( ! $profile->validate($input_profile)) {
                foreach ($input_profile->errors('form_errors') as $error) {
                    $errors[] = $error;
                }
            }

            if (isset($errors)) {
                $json = array('success' => FALSE, 'errors' => $errors);
                $this->template->body = json_encode($json);

            } else {
                if ( ! empty($input['password']))
                    $user->hashed_password = Auth::hash_password($input['password']);

                $user->save();
                $this->set_session_user();

                $profile->save();
                $this->set_session_profile();

                $json = array('success' => TRUE);
                $this->template->body = json_encode($json);
            }
        }