如何使用yii2菜单小部件uikit设置数据属性

Question

我正在使用yii2和uikit。我正在尝试使用菜单小部件构建一个导航栏，我有：

<nav class='uk-navbar'>            
        <?php
        echo Menu::widget([
            'activateItems' => true,
            'activateParents' => true,
            'activeCssClass' => 'uk-active',
            'encodeLabels' => false,
            'items' => [
                ['label' => 'Inicio', 'url' => ['site/index']],
                ['label' => 'Juridico', 'url' => ['juridico/index']],
                ['label' => 'Pagos', 'url' => ['pagos/index']],
                ['label' => 'Universidades', 'url' => ['universidades/index']],
                ['label' => 'Usuarios', 'url' => ['usuarios/index']],
                ['label' => 'Planes', 'options' => ['class' => 'uk-parent', 'data' => 'uk-dropdown'], 'url' => ['#'], 'items' => [
                        ['label' => 'Planes Juridico', 'url' => ['#']],
                        ['label' => 'Planes Universidades', 'url' => ['#']],
                    ]],
                ['label' => 'Login', 'url' => ['site/login'], 'visible' => Yii::$app->user->isGuest],
            ],
            'submenuTemplate' => '<div class="uk-dropdown uk-dropdown-navbar"><ul class="uk-nav uk-nav-navbar">{items}</ul></div>',
            'options' => [ 'class' => 'uk-navbar-nav'],
        ]);
        ?>     
    </nav>

所有我缺少的是这个属性，但我不知道如何设置它'data-uk-dropdown'

我需要这个结果才能下拉工作：

<nav class="uk-navbar">
        <ul class="uk-navbar-nav">
            <li class="uk-active"><a href="">Active</a></li>
            <li><a href="">Item</a></li>
            <li class="uk-parent" data-uk-dropdown>
                <a href="">Parent</a>
                <div class="uk-dropdown uk-dropdown-navbar">
                    <ul class="uk-nav uk-nav-navbar">
                        <li><a href="#">Item</a></li>
                        <li><a href="#">Another item</a></li>
                        <li class="uk-nav-header">Header</li>
                        <li><a href="#">Item</a></li>
                        <li><a href="#">Another item</a></li>
                        <li class="uk-nav-divider"></li>
                        <li><a href="#">Separated item</a></li>
                    </ul>
                </div>
            </li>
        </ul>
    </nav>

提前致谢。