public static function createOrUpdate($id = null, $request)
{
$model = is_null($id) ? new User() : User::findOrFail($id);
$model->name = $request->input('name');
$model->email = $request->input('email');
if (!$id || $id && $request->input('password')) {
$model->password = $request->input('password');
}
$model->detachAllRoles();
$model->attachRole($request->input('roles'));
return $model->save() ? $model : false;
}
