public function permission_update($id)
{
$rules = ['displayName' => 'Required|String|Max:250', 'name' => 'Required|AlphaNum|Min:3|Max:250', 'value' => 'Required'];
$v = Validator::make(Input::all(), $rules);
if ($v->passes()) {
$perm = UserPermission::findOrFail($id);
$perm->fill(Input::all());
if (!$perm->save()) {
Session::flash('site_notice', 'Error while saving!');
}
} else {
Session::flash('errors', $v->getMessageBag());
}
return Redirect::back();
}