Navbar visibility based on user permission using RBAC

Yii 2.0 General Discussions
1

I am trying to achieve the navbar visibility for a specified user it was working fine when I logged in, the navbar visibility was working until when I logged out there was this error:

Undefined variable: $items

this is where the error is

echo Nav::widget([
‘options’ => [‘class’ => ‘navbar-nav navbar-right’],
‘items’ => $items,
]);

2

Hi @atif, welcome to the forum!

Could you show us the code that runs before these lines, where $items are defined according to the user permission?

Most probably you have to add

$items = [];

somewhere in your code in order to deal with the permissions of a guest user.

3

Thank you for your reply. Sorry im new in yii, i will really appreciate your help.
This is the code before these lines:

$navItem = [

];

$itemsForAdmin = [
[‘label’ => ‘Home’, ‘url’ => [‘addproduct/index’]],
[‘label’ => ‘User’, ‘url’ => [‘new-user/index’]],
];

$landr = [
[‘label’ => ‘Login’, ‘url’ => [’/site/login’]],
[‘label’ => ‘Register’, ‘url’ => [’/site/register’]],
];

$items = ArrayHelper::merge($navItem, $itemsForAdmin);

if(Yii::$app->user->isGuest){
array_push($navItem, $landr);
}

else {
array_push($navItem, ‘

  • ’. Html::beginForm([’/site/logout’], ‘post’). Html::submitButton(‘Logout (’ . Yii::$app->user->identity->username . ‘)’,[‘class’ => ‘btn btn-link logout’]).Html::endForm(). ‘
    • ’);
    }

    if (Yii::$app->user->can(‘admin’)) {
    return $items;
    }

    echo Nav::widget([
    ‘options’ => [‘class’ => ‘navbar-nav navbar-right’],
    ‘items’ => $items,
    ]);
    NavBar::end();
    ?>

    4

    It looks a bit confused.

    Try this instead:

    $navItem = [
    ...
];

$itemsForAdmin = [
    ['label' => 'Home', 'url' => ['addproduct/index']],
    ['label' => 'User', 'url' => ['new-user/index']],
];

$landr = [
    ['label' => 'Login', 'url' => ['/site/login']],
    ['label' => 'Register', 'url' => ['/site/register']],
];

if (Yii::$app->user->can('admin')) {
    array_push($navItem, $itemsForAdmin);
}

if(Yii::$app->user->isGuest){
    array_push($navItem, $landr);
} else {
    array_push($navItem, '<li>'. Html::beginForm(['/site/logout'], 'post'). 
        Html::submitButton('Logout (' . Yii::$app->user->identity->username . ')', 
       ['class' => 'btn btn-link logout']).Html::endForm(). '</li>');
}

echo Nav::widget([
    'options' => ['class' => 'navbar-nav navbar-right'],
    'items' => $navItem,
]);
NavBar::end();
    1 Like
    5

    Thank you very much!:slightly_smiling_face: It Worked!!!