<div class="widget widgetMenu widgetMainMenu">
    <ul>
        <?= $this->getHelper('partialLoop')
            ->setObjectKey('menuItem')
            ->refVars('currentPage')
            ->partialLoop('_partials/widget/menu/main/item.phtml', $this->menuItems) ?>
     </ul>
</div>


Файл item.phtml

<?
    $this->active = in_array($this->menuItem->pageId, $this->currentPage->pathIds);
    $this->hasChildren = $this->active && count($this->menuItem->children);
?>
<li<?= ($this->active ? ' class="active"' : ' class="inactive"') ?>>
    <a href="<?= $this->pageUrl($this->menuItem) ?>"<?= ($this->hasChildren ? ' class="hasChildren"' : '') ?>>
        <span class="menuItemContent">
            <?= $this->menuItem->contents->name ?>
        </span>
    </a>
    <? if($this->hasChildren): ?>
    <ul>
        <?= $this->getHelper('partialLoop')
            ->setObjectKey('menuItem')
            ->refVars('currentPage')
            ->partialLoop('_partials/widget/menu/main/item-2.phtml', $this->menuItem->children) ?>
    </ul>
    <? endif; ?>
</li>


Файл item-2.phtml

<?
    $this->active = in_array($this->menuItem->pageId, $this->currentPage->pathIds);
    $this->hasChildren = $this->active && count($this->menuItem->children);
?>
<li<?= ($this->active ? ' class="active"' : ' class="inactive"') ?>>
    <a href="<?= $this->pageUrl($this->menuItem) ?>">
        <span class="menuItemContent">
            <?= $this->menuItem->contents->name ?>
        </span>
    </a>
    <? if($this->hasChildren): ?>
    <ul>
        <?= $this->getHelper('partialLoop')
            ->setObjectKey('menuItem')
            ->refVars('currentPage')
            ->partialLoop('_partials/widget/menu/main/item-3.phtml', $this->menuItem->children) ?>
    </ul>
    <? endif; ?>
</li>


Файл item-3.phtml

<?
    $this->active = in_array($this->menuItem->pageId, $this->currentPage->pathIds);
    //$this->hasChildren = $this->active && count($this->menuItem->children);
?>
<li<?= ($this->active ? ' class="active"' : ' class="inactive"') ?>>
    <a href="<?= $this->pageUrl($this->menuItem) ?>">
        <span class="menuItemContent">
            <?= $this->menuItem->contents->name ?>
        </span>
    </a>
</li>