public function doLogin(){

        // create our user data for the authentication
        $userdata = array(
            'Nombre_Usuario'    => Input::get('username'),
            'Contrasena'    => Input::get('password')
        );

        // attempt to do the login
        if (Auth::attempt($userdata, true)) {
            return Redirect::to('/home')->with('message', 'You are logged in.');
        }else{
            return Redirect::to('/')->with('message', 'Your username/password combination was incorrect.')->withInput();
        }

    }