return Redirect::back()->with('message','Operation Successful !');

echo Session::get('message');

// [[... validation and other magic here]]

if ($validator->fails()) {
    return Redirect::back()
        ->withMessage($message_fail)
        ->withErrors($validator)
        ->withInput();
}

return Redirect::back()
        ->withMessage($message_success)

return redirect()->action('HomeController@index');