Виджет tree-view. CTreeview из yii1 для yii2. Используеться jquery-treeview . CTreeview
The preferred way to install this extension is through composer.
Either run
php composer.phar require --prefer-dist lesha724/yii2-tree-view "*"
or add
"lesha724/yii2-tree-view": "*"
to the require section of your composer.json file.
Once the extension is installed, simply use it in your code by :
<?= \lesha724\treeview\TreeView::widget(); ?>```